[dradernh]

Originally Posted by B58togo

Apex recommends annual replacement of their studs if you track your car. I don’t recall any reference from BMW indicating stock bolts as having any type of maintenance cycle.

That's interesting. With no apparent ill effects, I ran Bimmerworld's race studs on an E36 M3 race car for 104 days and ~3,000 laps during 2010-2013. No air tools were used; all lug nut removals and reinstalls were done by hand. The only time studs were removed was when new hubs were installed, and the used studs were installed in the new hubs (I'm not 100% sure that was always the case, though).

I never discussed this subject with other drivers, but I wouldn't be surprised if some were changing studs out every year. I know that other drivers occasionally had a stud break.

Some drivers considered wheels to be wear items and changed them out each year or two. I traveled with seven sets of wheels with mounted tires (four drys, three wets), and never had an issue requiring a wheel to be replaced. I suspect some drivers were either overly cautious and/or there was a wide range of experiences with equipment.

As always, my 2¢, and YMMV.