Q: My right front outer CV axle boot is torn. The car rides fine right now. How long do you recommend I go before replacing the boot/axle?
A: The purpose of the boot on a CV axle is to retain the grease that lubricates the axle joint. When the boot tears the grease is thrown out of the joint while driving. The axle will not last long without the proper lubrication. There is no way to tell for sure how long it will last, however there is a way to tell when it absolutely must be replaced. If it starts making a clicking noise when turning it is on its last leg and needs to be replaced asap.