The first question: generally, the prices of things in 4s shops are high. There is no difference between the original factory and the deputy factory! Don't buy kumho tires no matter how cheap they are! Didn't you see 3 15?

The second question: a bigger repair shop can use the negative pressure of the machine to suck up the small pit, which is very cheap!

I don't understand the third question. Excuse me!

The fourth question: don't listen to any maintenance brakes in 4s shop! There is no glue on the tires and axle heads! It is caused by the small gap between the automobile hub and the shaft head! You can go to the tire repair shop to grind the inside with ink a little before doing tire dynamic balance, but don't grind the outer ring of the hub cover or the tire dynamic balance will be inaccurate.

The tire positioning method is to put the front directly behind! Front over back! Usually it is adjusted every 8,000 kilometers.