The general service life of a tire is about 3 years and 5-8 Wkilometers. This is not absolute, because the wear and tear of the tire is greatly related to the road surface. If the road surface is smooth, the service life will be long. If the road surface is bumpy or uneven, the service life of the tire will definitely be reduced. How to determine whether the tire needs to be replaced: 1. Check the tire tread depth: Check the wear degree of the tire, whether there is abnormal wear and the aging degree of the tire. It is an easier way to determine whether the tire can still be used normally. Under normal circumstances, after 3 to 5 years of use, the tire should be replaced when the remaining pattern depth is less than 3 mm. Because the tire pattern directly affects the grip of the tire and the stability of the vehicle, if the tire pattern is too thin or even not, the braking distance of the vehicle will become longer, and it will easily slip when driving in rainy days.
2. Tire rubber aging: Nowadays, there are not many kilometers traveled by family cars every day, so not many are worn to the limit marks of the pattern, but there are many phenomena of tire aging. The most common cause of tire rubber aging is cracking on the surface of the tire. There are many small cracks.
3. Bulging and scratching appear on the tire sidewall. Because bulging means that one or more steel wires inside the tire are broken, causing the rubber to be unable to withstand the pressure inside the tire, so bulging phenomenon will occur. Scratch on the tire wall is also very dangerous, because the tire sidewall is the weakest part of the tire. Scratch will damage the strength of the tire sidewall, causing a part of the tire sidewall to become thinner. After the rubber becomes thinner, a tire may occur.
When going to the store for maintenance, the maintenance staff suggested replacing them. The price in the store is about 800 yuan per piece, and replacing two pieces will cost nearly 2,000 yuan (plus working hours). In order to save costs, we found a nearby repair shop. Two tires and working hours were less than 1,000 yuan.
The wear degree of the rear wheel is not very serious, so replace it with the front wheel and continue to wear the original tire.
Front wheel tires with severe wear.
Remove the rear wheel.
What do you think of brake pads?
Two new Hankook tires ready to be replaced.
Hankook Tire originally planned to replace Cooper tires. The price was more competitive than this, but the distance was a bit far away, so in order to save trouble, we made a reservation directly with the repair shop.
Tire specifications.
40 weeks in 2020, which has been almost half a year, is it considered as stock tires? Is there any impact? Give me some guidance from an expert.
After replacing the new tire, do dynamic balance, adjust the position of the front and rear wheels, and place the new tire behind.
The other one is ready.
Start fixing. I can never forget the scene of using a tool to twist and then put it on my feet. Nowadays, tools are really much more convenient.
The replacement is completed and the drive test starts.
Continue to use original factory wear on the severely worn front. Run another 40,000 kilometers and see how the tires wear?
Two replaced tires.
The wear and tear is a bit serious. The maintenance staff in the store also said the same. What is the reason? He couldn’t explain clearly. Anyway, it’s not partial wear
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The fetal hair of the old fetus is still there, but the tread is full of scars. The replacement steps are a bit simplified in the text, but they are as practical as they are after replacement. After all, the tires are wear and tear parts, so they can be replaced if they need to be replaced.
FlorenceYonng 
2 
September 15, 2024 
