Does Having One New Tire and One Old Tire on the Front Wheels Have Any Impact?

[LeCharles]

Having one new tire and one old tire on the front wheels is acceptable as long as they are of the same model and tread pattern. Below is an extended explanation: 1. Tire Replacement Rules: Front tires must be of the same model and tread pattern; otherwise, it may affect driving safety. It is best to replace tires in pairs—replace both front tires, and if only one rear tire is replaced, the new tire will wear out much faster. 2. Replacement Timing: Generally, manufacturers set the service life of tires at 3 years. If a vehicle is driven 20,000 kilometers a year, replacement should be considered after 2–3 years. If driven around 10,000 kilometers a year, replacement should be considered after 4–5 years. Even if only 5,000 kilometers are driven annually, replacement should still be considered after 4–5 years. Even brand-new tires should be considered for replacement after 3 years of storage. Therefore, spare tires in the car trunk also require regular maintenance, and unused spare tires that have been stored for too long should be replaced.