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| URL | https://www.aa.co.nz/about/safer-vehicles/tyre-safety/ |
| Last Crawled | 2026-04-03 00:20:46 (9 days ago) |
| First Indexed | 2025-03-29 02:48:31 (1 year ago) |
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| Meta Title | Tyre safety |
| Meta Description | Tyre Awareness Week 2014 wants to get more Kiwi drivers regularly checking the condition and air pressure of their tyres., |
| Meta Canonical | null |
| Boilerpipe Text | When was the last time you checked your tyres?
A tyre without much tread left or low pressure can severely compromise both grip and stopping distances.
Visit theÂ
Tyre Safety website
 for more info on how to make sure your tyres are safe and efficient, and enter the draw for several sets of new tyres.
Almost all tyres have wear bars in the groove of the tread, so make sure the tyre isn’t worn down to the wear bar. The wear bars show when you only have 1.5mm of tread left, at which point your tyres are on their absolute minimum legal tread depth. In the wet, or travelling at high speeds, your grip and stopping distances are seriously compromised if you have below 1.5mm of tread.
Another easy check is to insert a 20c coin into the tread. The base of the number 20 is approximately 2mm from the edge of the coin, so if you can see the whole of the number, it’s time to think about replacing your tyres.
You can make it easier to check the tread on your front tyres by turning them fully to one side then the other.
Just like a balloon, all tyres gradually lose air over time, but with modern tyres it is difficult to tell whether they are underinflated.
Underinflated tyres reduce grip and increase stopping distances. They also will wear our faster and cost you more in fuel. Underinflated tyres can use about 4% more fuel, or about an extra 8 cents per litre at current petrol prices. To check the correct tyre pressure for your car try looking for a sticker inside the driver’s door pillar, in the manual or there is an online tyre pressure tool on theÂ
EECA Energywise website
.
If none of these can give you your correct pressure you can try emailingÂ
info@tyresafety.org.nz
If you see any cracks or bubbles in the side of your tyre, or the tread is wearing out faster in some places than others, take it to a garage or tyre retailer for a professional to check.
When you are checking your tread depth and air pressure, take a moment to look for any tyre damage as well. If you see any cracks or bubbles in the side of your tyre, or the tread is wearing out faster in some places than others, take it to a garage or tyre retailer for a professional to check.
The AA recommends that you check your tyre pressures about once a month. The best time to do this is when you’re at a service station filling up on fuel. This is also a perfect time to check your tread depth and tyre condition. |
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[AA Roadservice app](https://www.aa.co.nz/membership/roadservice-breakdown-assistance/aa-roadservice-mobile-app/ "AA Roadservice app")
[Overseas Visitors & AA Members Travelling Internationally](https://www.aa.co.nz/membership/benefits-and-discounts/international-visitor-reciprocal-club-members/ "Overseas Visitors & AA Members Travelling Internationally")
## [Business Membership](https://www.aa.co.nz/membership/business/ "Business Membership") keyboard\_arrow\_down
[AA Business Care](https://www.aa.co.nz/membership/business/aa-business-care/ "AA Business Care")
[AA Dealer Care](https://www.aa.co.nz/membership/business/aa-dealer-care/ "AA Dealer Care")
[AA Driver Care](https://www.aa.co.nz/membership/business/aa-driver-care/ "AA Driver Care")
[AA Rental Care](https://www.aa.co.nz/membership/business/aa-rental-care/ "AA Rental Care")
[Fleet Assistance Programmes](https://www.aa.co.nz/membership/business/business-assistance-programmes/ "Fleet Assistance Programmes")
[Business Membership enquiry](https://www.aa.co.nz/membership/business/business-membership-enquiry/ "Business Membership enquiry")
## [Cars](https://www.aa.co.nz/cars/ "Cars") keyboard\_arrow\_down
## [Car maintenance](https://www.aa.co.nz/cars/maintenance/ "Car maintenance") keyboard\_arrow\_down
[AA Auto Centres](https://www.aa.co.nz/cars/maintenance/auto-centre/ "AA Auto Centres")
[Service your car](https://www.aa.co.nz/cars/maintenance/service/ "Service your car")
[Repair your car](https://www.aa.co.nz/cars/maintenance/repair/ "Repair your car")
[WoF](https://www.aa.co.nz/cars/maintenance/wof/ " WoF")
[AA Battery Service](https://www.aa.co.nz/cars/maintenance/batteries/ "AA Battery Service")
[AA Auto Glass](https://www.aa.co.nz/cars/maintenance/auto-glass/ "AA Auto Glass")
[AA Approved Repairers](https://www.aa.co.nz/cars/maintenance/aa-approved-repairers/ "AA Approved Repairers")
## [Buying & selling](https://www.aa.co.nz/cars/buying-and-selling/ "Buying & selling ") keyboard\_arrow\_down
[Pre Purchase Inspections](https://www.aa.co.nz/cars/buying-and-selling/pre-purchase-inspections/ "Pre Purchase Inspections")
[AA Preferred Dealers](https://www.aa.co.nz/cars/buying-and-selling/preferred-dealers/ "AA Preferred Dealers")
[Vehicle Valuation Reports](https://www.aa.co.nz/cars/buying-and-selling/vehicle-valuations/ "Vehicle Valuation Reports ")
[Vehicle History Checks](https://www.aa.co.nz/cars/buying-and-selling/history-check/ "Vehicle History Checks")
[Running Costs Report](https://www.aa.co.nz/cars/buying-and-selling/running-cost-reports/ "Running Costs Report")
[Car buying guide](https://www.aa.co.nz/cars/buying-and-selling/how-to-buy-a-used-car/ "Car buying guide")
[Selling a car](https://www.aa.co.nz/cars/buying-and-selling/selling-a-car/ "Selling a car")
## [Ownership & registration](https://www.aa.co.nz/cars/owners/ "Ownership & registration") keyboard\_arrow\_down
[Registration and licensing](https://www.aa.co.nz/cars/owners/register-a-car/ "Registration and licensing")
[Road user charges](https://www.aa.co.nz/cars/owners/road-user-charges/ "Road user charges")
[Import and export](https://www.aa.co.nz/cars/owners/import-and-export/ "Import and export")
[Re-registration and entry compliance](https://www.aa.co.nz/cars/owners/re-register-a-car/ "Re-registration and entry compliance")
[Towing](https://www.aa.co.nz/cars/owners/towing/ "Towing")
[Tyres](https://www.aa.co.nz/cars/owners/tyres/ "Tyres")
[EV charging stations](https://www.aa.co.nz/cars/owners/ev-charging-stations/ "EV charging stations")
## [Reviews & articles](https://www.aa.co.nz/cars/car-reviews/ "Reviews & articles") keyboard\_arrow\_down
[Motoring blog](https://www.aa.co.nz/cars/motoring-blog/ "Motoring blog")
[Car reviews](https://www.aa.co.nz/cars/car-reviews/ "Car reviews")
[Ask an expert](https://www.aa.co.nz/cars/ask-an-expert/ "Ask an expert")
## [Driver training & licensing](https://www.aa.co.nz/drivers/ "Driver training & licensing ") keyboard\_arrow\_down
## [AA Driving School](https://www.aa.co.nz/drivers/driving-school/ "AA Driving School") keyboard\_arrow\_down
[Driving Lessons](https://www.aa.co.nz/drivers/driving-school/driving-lessons/ "Driving Lessons")
[Defensive Driving Course](https://www.aa.co.nz/drivers/driving-school/defensive-driving-course/ "Defensive Driving Course")
[Road Code Practice Test](https://www.aa.co.nz/drivers/driving-school/road-code-practice-test/ "Road Code Practice Test")
[Training & assessment for business](https://www.aa.co.nz/drivers/driving-school/business/ "Training & assessment for business")
[For learner licence](https://www.aa.co.nz/drivers/driving-school/get-learner-licence/ "For learner licence")
[For restricted licence](https://www.aa.co.nz/drivers/driving-school/get-restricted-licence/ "For restricted licence ")
[For full licence](https://www.aa.co.nz/drivers/driving-school/get-full-licence/ "For full licence")
[For fully licensed drivers](https://www.aa.co.nz/drivers/driving-school/training-for-fully-licensed-drivers/ "For fully licensed drivers")
[AA Driving School locations](https://www.aa.co.nz/drivers/driving-school/locations/ " AA Driving School locations")
## [Driver licensing](https://www.aa.co.nz/drivers/driver-licences/ "Driver licensing") keyboard\_arrow\_down
[Renew or replace driver licence](https://www.aa.co.nz/drivers/driver-licences/renewing-or-replacing-your-licence/ "Renew or replace driver licence")
[International Driving Permit](https://www.aa.co.nz/drivers/driver-licences/driving-permits-for-driving-overseas/ "International Driving Permit")
[Convert to NZ driver licence](https://www.aa.co.nz/drivers/driver-licences/overseas-licence-conversions/ "Convert to NZ driver licence")
[Learner licence](https://www.aa.co.nz/drivers/driver-licences/learner-driver-licences/ "Learner licence")
[Restricted licence](https://www.aa.co.nz/drivers/driver-licences/restricted-driver-licences/ "Restricted licence")
[Full licence](https://www.aa.co.nz/drivers/driver-licences/full-driver-licences/ "Full licence")
[Motorcycle licenses](https://www.aa.co.nz/drivers/driver-licences/motorcycle-licence/ "Motorcycle licenses")
[AA driver licensing agent locations](https://www.aa.co.nz/drivers/driver-licences/locations/ "AA driver licensing agent locations")
[AA Mobile Unit licensing service](https://www.aa.co.nz/drivers/driver-licences/aa-mobile-units/ "AA Mobile Unit licensing service")
## [ID services](https://www.aa.co.nz/about/identity-verification/ "ID services") keyboard\_arrow\_down
[Having the right ID](https://www.aa.co.nz/about/identity-verification/id/ "Having the right ID")
[RealMe® verifications](https://www.aa.co.nz/about/identity-verification/realme/ "RealMe® verifications")
[IRD Number applications](https://www.aa.co.nz/about/identity-verification/ird/ "IRD Number applications")
[Kiwi Access Card applications](https://www.aa.co.nz/about/identity-verification/kiwi-access/ "Kiwi Access Card applications")
[SuperGold Card photos](https://www.aa.co.nz/about/identity-verification/supergold/ "SuperGold Card photos")
## [Instructor training](https://www.aa.co.nz/drivers/driving-instructor-training/ "Instructor training") keyboard\_arrow\_down
[I-endorsement course](https://www.aa.co.nz/drivers/driving-instructor-training/i-endorsement-course/ "I-endorsement course")
[Become an AA Driving Instructor](https://www.aa.co.nz/drivers/driving-instructor-training/aa-driving-instructor/ "Become an AA Driving Instructor")
[Become a Defensive Driving Course tutor](https://www.aa.co.nz/drivers/driving-instructor-training/defensive-driving-course-tutor/ "Become a Defensive Driving Course tutor")
## [Insurance & finance](https://www.aa.co.nz/insurance/ "Insurance & finance ") keyboard\_arrow\_down
## [General Insurance](https://www.aa.co.nz/insurance/ "General Insurance") keyboard\_arrow\_down
[Car Insurance](https://www.aa.co.nz/insurance/car-and-vehicle-insurance/ "Car Insurance")
[Contents Insurance](https://www.aa.co.nz/insurance/home-contents-insurance/ "Contents Insurance")
[Home Insurance](https://www.aa.co.nz/insurance/home-contents-insurance/ "Home Insurance")
[Small Business Insurance](https://www.aa.co.nz/insurance/aa-small-business-insurance/ "Small Business Insurance")
[Mechanical Breakdown Insurance](https://www.aa.co.nz/insurance/car-and-vehicle-insurance/mechanical-breakdown-insurance/ "Mechanical Breakdown Insurance")
[AA Member discounts on insurance](https://www.aa.co.nz/membership/benefits-and-discounts/ "AA Member discounts on insurance")
## [Personal Insurance](https://www.aa.co.nz/insurance/ "Personal Insurance") keyboard\_arrow\_down
[Health Insurance](https://www.aa.co.nz/insurance/health-insurance/ "Health Insurance")
[Life Insurance](https://www.aa.co.nz/insurance/life-insurance/ "Life Insurance")
[Pet Insurance](https://www.aa.co.nz/insurance/pet-insurance/ "Pet Insurance")
[Travel Insurance](https://www.aa.co.nz/insurance/travel-insurance/ "Travel Insurance")
[AA Member discounts on insurance](https://www.aa.co.nz/membership/benefits-and-discounts/ "AA Member discounts on insurance")
## [Finance](https://www.aamoney.co.nz/ "Finance") keyboard\_arrow\_down
[Vehicle loans](https://www.aamoney.co.nz/ "Vehicle loans")
[Apply now](https://www.aamoney.co.nz/vehicle-loans/car-loans "Apply now")
[Blog](https://www.aamoney.co.nz/quick-reads/ "Blog")
[Contact AA Money](https://www.aamoney.co.nz/contact-us "Contact AA Money")
## [Disclosure statements](https://www.aa.co.nz/insurance/disclosure-statement/ "Disclosure statements") keyboard\_arrow\_down
[Complaints disclosure](https://www.aa.co.nz/insurance/complaints-disclosure-statement/ "Complaints disclosure")
[Financial advice provider disclosure statement](https://www.aa.co.nz/insurance/disclosure-statement/ "Financial advice provider disclosure statement")
[Complaints](https://www.aa.co.nz/contact-us/making-a-complaint/ "Complaints")
## [Home services](https://www.aa.co.nz/home-services/ "Home services") keyboard\_arrow\_down
## [Emergency trades](https://www.aa.co.nz/home-services/aa-home-response/ "Emergency trades") keyboard\_arrow\_down
[AA Home Response](https://www.aa.co.nz/home-services/aa-home-response/ "AA Home Response")
[AA Home Response Plus](https://www.aa.co.nz/home-services/aa-home-response/plus/ "AA Home Response Plus")
[Subscribe to AA Home Response](https://www.aa.co.nz/home-services/aa-home-response/about-aa-home-response-subscriptions/ "Subscribe to AA Home Response")
[Renew your subscription](https://www.aa.co.nz/home-services/aa-home-response/renew-your-aa-home-subscription/ "Renew your subscription ")
[Tradespeople hourly rates](https://www.aa.co.nz/home-services/aa-home-response/our-tradespeople-hourly-rate/ "Tradespeople hourly rates")
[Household incidents covered](https://www.aa.co.nz/home-services/aa-home-response/household-incidents-covered/ "Household incidents covered")
## [Home repairs & maintenance](https://www.aa.co.nz/home-services/book-a-job/ "Home repairs & maintenance ") keyboard\_arrow\_down
[AA Home Book a Job](https://www.aa.co.nz/home-services/book-a-job/ "AA Home Book a Job")
[Book a Job now](https://bookajob.aahome.co.nz/home?_gl=1*16caocr*_gcl_au*MjEwNjY3MDg2My4xNzQ0Njc5MDM3*FPAU*MjEwNjY3MDg2My4xNzQ0Njc5MDM3*_ga*ODUzOTU2NTMzLjE3NDQ2NzkwMzg.*_ga_PNYJZGH4F3*MTc0NTM3MDM0NS4xMy4xLjE3NDUzNzU0MTUuMC4wLjE5ODU2NTg1NjY.*_fplc*Z25yWUNCNnQ0T1R4ckVjR0FibWU0MDRGall1azRMeFVVZTB2RWxQRTFsR25BR1lKdFVUREg2TnZZbjR3VjBlMDk3cWcwYXBuN0twYXdJTXpHNTBqaW9yT3ppTG8zaUNkMkxSY3BlcW84TkNrRlJ4cUtJd3BLR2V6QWZEbm1nJTNEJTNE*_ga_EMQQPZVZVY*MTc0NTM3MDM0NS4xMy4xLjE3NDUzNzU0MTUuNTkuMC4w "Book a Job now")
[Home services available](https://www.aa.co.nz/home-services/book-a-job/#services "Home services available")
[AA Home FAQs](https://www.aa.co.nz/home-services/faq/ "AA Home FAQs")
[Book a Job FAQs](https://www.aa.co.nz/home-services/faq/aa-home-book-a-job-faq/ "Book a Job FAQs")
## [Home Inspection](https://www.aa.co.nz/home-services/book-a-job/home-inspection-services/ "Home Inspection") keyboard\_arrow\_down
[Home Inspection Services](https://www.aa.co.nz/home-services/book-a-job/home-inspection-services/ "Home Inspection Services")
[Pre Purchase/Sale building inspections](https://www.aa.co.nz/home-services/book-a-job/home-inspection-services/#purchase "Pre Purchase/Sale building inspections")
[Rental Property Inspections](https://www.aa.co.nz/home-services/book-a-job/home-inspection-services/#rental "Rental Property Inspections")
[Asbestos Testing](https://www.aa.co.nz/home-services/book-a-job/home-inspection-services/#asbestos "Asbestos Testing")
## [Travel](https://www.aa.co.nz/travel/ "Travel") keyboard\_arrow\_down
## [AA Traveller](https://www.aa.co.nz/travel/ "AA Traveller") keyboard\_arrow\_down
[Book accommodation](https://www.aa.co.nz/travel/member-deals/aa-member-discounts-on-accommodation/ "Book accommodation")
[Book activities](https://www.aa.co.nz/travel/aa-members-save-on-experiences/ "Book activities ")
[Buy AA Travel Insurance](https://www.aa.co.nz/insurance/travel-insurance/ "Buy AA Travel Insurance")
[Travel to Australia](https://www.aa.co.nz/travel/travel-to-australia/ "Travel to Australia")
[AA Member travel discounts](https://www.aa.co.nz/travel/member-deals/ "AA Member travel discounts")
## [Maps](https://www.aa.co.nz/maps/ "Maps") keyboard\_arrow\_down
## [News & community]("News & community ") keyboard\_arrow\_down
## [Identity verification services](https://www.aa.co.nz/about/identity-verification/ "Identity verification services") keyboard\_arrow\_down
[What ID you need](https://www.aa.co.nz/about/identity-verification/id/ "What ID you need")
[Waka Kotahi NZTA](https://www.aa.co.nz/about/identity-verification/nzta/ "Waka Kotahi NZTA")
[RealMe® Verified Identity](https://www.aa.co.nz/about/identity-verification/realme/ "RealMe® Verified Identity")
[IRD Number applications](https://www.aa.co.nz/about/identity-verification/ird/ "IRD Number applications")
[Kiwi Access Card](https://www.aa.co.nz/about/identity-verification/kiwi-access/ "Kiwi Access Card")
[SuperGold Card](https://www.aa.co.nz/about/identity-verification/supergold/ "SuperGold Card")
## [In the community](https://www.aa.co.nz/about/ "In the community") keyboard\_arrow\_down
[Safer vehicles](https://www.aa.co.nz/about/safer-vehicles/ "Safer vehicles")
[AA Research Foundation](https://www.aa.co.nz/about/aa-research-foundation/ "AA Research Foundation")
[Affiliations with the AA](https://www.aa.co.nz/about/affiliations/ "Affiliations with the AA")
[Speaking up for AA Members](https://www.aa.co.nz/about/speaking-up-for-aa-members/ "Speaking up for AA Members")
## [Newsroom](https://www.aa.co.nz/about/newsroom/ "Newsroom") keyboard\_arrow\_down
[Media releases](https://www.aa.co.nz/about/newsroom/media-releases/ "Media releases")
[AA publications](https://www.aa.co.nz/about/newsroom/aa-publications/ "AA publications")
[AA Directions](https://www.aa.co.nz/membership/aa-directions/ "AA Directions")
[AA spokespeople](https://www.aa.co.nz/about/newsroom/aa-spokespeople/ "AA spokespeople")
[Public submissions](https://www.aa.co.nz/about/newsroom/public-submissions/ "Public submissions")
- [About AA](https://www.aa.co.nz/about/ "About AA")
- [Location finder](https://www.aa.co.nz/maps/ "Location finder")
- [AA Shop](https://shop.aa.co.nz/ "AA Shop")
- [Stay safe: Scam alerts](https://www.aa.co.nz/site-info/help/scams/ "Stay safe: Scam alerts")
- [AA Directions](https://www.aa.co.nz/membership/aa-directions/ "AA Directions")
- [Contact us](https://www.aa.co.nz/contact-us/ "Contact us")
*search*
Ă—
1. [New Zealand Automobile Association](https://www.aa.co.nz/)
2. [About the AA](https://www.aa.co.nz/about/)
3. [Safer vehicles](https://www.aa.co.nz/about/safer-vehicles/)
# Tyre safety
When was the last time you checked your tyres?
A tyre without much tread left or low pressure can severely compromise both grip and stopping distances.
Visit the [Tyre Safety website](http://www.tyresafety.org.nz/) for more info on how to make sure your tyres are safe and efficient, and enter the draw for several sets of new tyres.
## Checking your tread depth
Almost all tyres have wear bars in the groove of the tread, so make sure the tyre isn’t worn down to the wear bar. The wear bars show when you only have 1.5mm of tread left, at which point your tyres are on their absolute minimum legal tread depth. In the wet, or travelling at high speeds, your grip and stopping distances are seriously compromised if you have below 1.5mm of tread.
Another easy check is to insert a 20c coin into the tread. The base of the number 20 is approximately 2mm from the edge of the coin, so if you can see the whole of the number, it’s time to think about replacing your tyres.

You can make it easier to check the tread on your front tyres by turning them fully to one side then the other.
## Checking your tyre pressure
Just like a balloon, all tyres gradually lose air over time, but with modern tyres it is difficult to tell whether they are underinflated.
Underinflated tyres reduce grip and increase stopping distances. They also will wear our faster and cost you more in fuel. Underinflated tyres can use about 4% more fuel, or about an extra 8 cents per litre at current petrol prices. To check the correct tyre pressure for your car try looking for a sticker inside the driver’s door pillar, in the manual or there is an online tyre pressure tool on the [EECA Energywise website](http://www.energywise.govt.nz/tools/tyre-pressure).
If none of these can give you your correct pressure you can try emailing [info@tyresafety.org.nz](https://www.aa.co.nz/cdn-cgi/l/email-protection#751c1b131a535643414e010c071006141310010c5b1a07125b1b0f)
If you see any cracks or bubbles in the side of your tyre, or the tread is wearing out faster in some places than others, take it to a garage or tyre retailer for a professional to check.
## Checking your tyre condition
When you are checking your tread depth and air pressure, take a moment to look for any tyre damage as well. If you see any cracks or bubbles in the side of your tyre, or the tread is wearing out faster in some places than others, take it to a garage or tyre retailer for a professional to check.
## Make it a habit
The AA recommends that you check your tyre pressures about once a month. The best time to do this is when you’re at a service station filling up on fuel. This is also a perfect time to check your tread depth and tyre condition.
***
### More information
[\> Tyre Safety website](http://tyresafety.org.nz/)
[\> EECA Energywise tyre pressure tool](http://www.energywise.govt.nz/tools/tyre-pressure)

*call*
AA Roadservice
[*location\_on* Find AA Locations](https://www.aa.co.nz/maps/)
24 hour AA Roadservice
[*call* 0800 500 222](tel:0800%20500%20222)
***
Customer Contact Centre
[*call* 0800 500 444](tel:0800%20500%20444)
##### [Contact us](https://www.aa.co.nz/contact-us/) keyboard\_arrow\_down
- [Location finder](https://www.aa.co.nz/maps/)
- [Work or partner with us](https://www.aa.co.nz/about/work-or-partner-with-us/)
- [Careers](https://www.aa.co.nz/about/careers/)
- [Complaints](https://www.aa.co.nz/contact-us/making-a-complaint/)
##### [Help & support]() keyboard\_arrow\_down
- [Help](https://www.aa.co.nz/site-info/help/)
- [Identity verification](https://www.aa.co.nz/about/identity-verification/)
- [Site information](https://www.aa.co.nz/site-info/)
##### [Advocacy & safety]() keyboard\_arrow\_down
- [AA Research Foundation](https://www.aa.co.nz/about/aa-research-foundation/)
- [Media releases](https://www.aa.co.nz/about/newsroom/)
- [Affiliations](https://www.aa.co.nz/about/affiliations/)
##### [Legal]() keyboard\_arrow\_down
- [Privacy statement](https://www.aa.co.nz/site-info/terms-and-conditions/privacy-policy/)
- [Term & conditions](https://www.aa.co.nz/site-info/terms-and-conditions/)
The New Zealand Automobile Association (Incorporated).
- [](https://www.facebook.com/aa.co.nz)
- [](https://www.instagram.com/aa_new_zealand/)
- [](https://www.aa.co.nz/about/safer-vehicles/tyre-safety/) |
| Readable Markdown | When was the last time you checked your tyres?
A tyre without much tread left or low pressure can severely compromise both grip and stopping distances.
Visit the [Tyre Safety website](http://www.tyresafety.org.nz/) for more info on how to make sure your tyres are safe and efficient, and enter the draw for several sets of new tyres.
Almost all tyres have wear bars in the groove of the tread, so make sure the tyre isn’t worn down to the wear bar. The wear bars show when you only have 1.5mm of tread left, at which point your tyres are on their absolute minimum legal tread depth. In the wet, or travelling at high speeds, your grip and stopping distances are seriously compromised if you have below 1.5mm of tread.
Another easy check is to insert a 20c coin into the tread. The base of the number 20 is approximately 2mm from the edge of the coin, so if you can see the whole of the number, it’s time to think about replacing your tyres.
You can make it easier to check the tread on your front tyres by turning them fully to one side then the other.
Just like a balloon, all tyres gradually lose air over time, but with modern tyres it is difficult to tell whether they are underinflated.
Underinflated tyres reduce grip and increase stopping distances. They also will wear our faster and cost you more in fuel. Underinflated tyres can use about 4% more fuel, or about an extra 8 cents per litre at current petrol prices. To check the correct tyre pressure for your car try looking for a sticker inside the driver’s door pillar, in the manual or there is an online tyre pressure tool on the [EECA Energywise website](http://www.energywise.govt.nz/tools/tyre-pressure).
If none of these can give you your correct pressure you can try emailing [info@tyresafety.org.nz](https://www.aa.co.nz/cdn-cgi/l/email-protection#751c1b131a535643414e010c071006141310010c5b1a07125b1b0f)
If you see any cracks or bubbles in the side of your tyre, or the tread is wearing out faster in some places than others, take it to a garage or tyre retailer for a professional to check.
When you are checking your tread depth and air pressure, take a moment to look for any tyre damage as well. If you see any cracks or bubbles in the side of your tyre, or the tread is wearing out faster in some places than others, take it to a garage or tyre retailer for a professional to check.
The AA recommends that you check your tyre pressures about once a month. The best time to do this is when you’re at a service station filling up on fuel. This is also a perfect time to check your tread depth and tyre condition. |
| Shard | 34 (laksa) |
| Root Hash | 9669975034915194634 |
| Unparsed URL | nz,co,aa!www,/about/safer-vehicles/tyre-safety/ s443 |