Tire Width, Tire To Rim, Rim Diameter – This is written like 4. So this wheel is 4. Notice that the size of this tire never specifies the diameter of the entire tire.What this means is that you have a tire which is 4. So your tire size means that the outside to outside widest width of your tire is 4.
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. Likewise, it is advised you stick within the 1. Incorrect tyre sizing can cause damage to the car. Bigger rims, or wider tyres, will make contact with the wheel arch, causing excess wear and tear, as well as more difficult driving.Generally, you don’t want to go with tires that have a diameter that is more than 3% different from the factory tires. It’s also a good idea to consult with a trusted mechanic before switching to larger or smaller tires.