I just had a massive hub/axle failure at limerock this weekend.
~ 90 mph coming out of west bend towards the downhill the drivers side let go and the car shot left then shot right and hooked towards the inside of the downhill. Massive vibration and intermittent wheel lockup on the drivers front. I managed to straighten it out and save the car, but didn’t have enough speed to get more than 10 feet into the pits.
Basically the brake rotor and caliper, and a little bit of the hub kept the wheel from coming off on me. Rotor ate the AP racing caliper so bad the red paint turned blue and burned off fluid was boiling out of it. Brand new rotor ring is toast, Hub/bearings, probably axle. The rotor eating the caliper probably saved my but because it scrubbed off so much speed I could get it back under control.
Car has ~ 18 track events on these hubs.
~350+ hp, MKIV 1.8T - 5 Speed hubs, 2750 lbs big slicks - driven very hard - was running low 1:03's at limerock.
I have been having problems blowing outer CV joints/boots on this axle for a while now. Some boots just melt and come apart at Watkins glen.
I am not sure if it was axle, or hub that let go at this point. Boot seems Ok, but i have been too busy to get into the tear down yet to see the full damage.
Damage to the brakes alone will be close to a grand to fix.
I am wondering if these should be replaced every season?