(1) The airtight layer was not completely repaired, and it continued to leak into the internal structure of the tire, resulting in sand holes. Chronic air leakage of sand holes may lead to tire puncture due to lack of air during driving.
(2) Fire patching causes the rubber to suffer from high heat, which damages the rubber structure and causes local early aging or damage.
Matters needing attention in automobile tire repair:
(1) Don't pull out the puncture immediately after the tire burst, which may cause "quick" air leakage! Find a place to mend the tire nearby! Ask the tire repairman to help you take out the object. If you don't recognize the "sound", fix it another day (the gray one will be fixed the next morning)
(2) Avoid the "wheel hub" when unloading tires.
(3) The grain direction of tire assembly should keep the original direction, and the grain direction of other wheels can be referred to.
(4) conditional car dealers, it is best to make a "balanced" view.