These nuts are totally explosion proof. I have an existing set on my pickup. It's been about 5 years since I first got them and the chrome has no chipping, no visible rust and they show almost no sign of discoloration or pitting. I used to have chrome nuts at the auto parts store, and after about the first tire change I noticed that the chrome finish almost always fell off. If you buy these they will be the last nuts you will ever need on your car.