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. As a general rule, you want replacement tires that are within 3 percent of the diameter (height) measurement of the tires originally on your vehicle.In most parts of the world, tires are considered to be legally worn out when they reach 2/32 (approximately 1.
Is 3mm tyre tread legal?
The legal limit for the minimum depth of the tread on your tyres is 1. For safety reasons, it is recommended that you replace your car tyres before the legal limit is reached. The legal limit of 1. Remember: – Check your tread depth on all four tyres – Check the inner, centre and outer.