If you here a crunching noise fron your car when you make sharp turns you probably have a bad CV (constant velocity)joint. These joints last forever or untill the rubber boot breaks and the grease leaks out. I allways recommend replacing both boots on the axle, even if the other one is ok. It’s a little more money to do both boots, but a lot cheaper than doing the same job again in 6 mo. when the other boot rips open.