What is the 3% rule for tires?
The 3% rule states that when replacing tires, the new tire’s diameter should not differ from the original by more than 3%. This guideline helps maintain proper vehicle performance, safety system functionality, and speedometer accuracy. The performance of tyres deteriorates the more worn they become. In fact the difference in stopping distance between tyres with 4mm or tread and tyres with the legal minimum of 1. That is why it is recommended that they are changed once tread levels reach 3mm or less.
Can winter tires last 7 years?
Replace winter tires when tread depth drops below 4-5mm or if you see visible wear like cracking. Even with good tread, tires older than six years may have aged rubber and should be replaced for safety. Some tire experts contend that tires can last anywhere from six to ten years if they’re stored and cared for properly. We recommend replacing tires aged 6-10 years, no matter how much tread remains.The clue is in the name. You’ll make a handy saving when it’s time to replace your treads because budget tyres are cheaper than other models. But it’s important to bear in mind that budget tyres generally won’t last as long as premium tyres. However, the lifespan of a tyre often depends on what and where you drive.