End005

Late last season one of my studs broke off. Another stripped. I considered replacing only the knuckle/hub but decided otherwise. I went over the 2015 STR rules but cannot find anything specifying whether extended studs are legal or not.

Now that we've a hint of spring (supposed to be 50s this Sunday), I figured it was about time I get a move on setting up the car for this season. Can anyone tell me whether ARP extended studs on all four corner is legal in STR?

Thanks so much.

imstimpy

13.4.B:
"Wheel studs, lug nuts, valve stems (including pressure-relief
types), and/or bolt length may be changed. "

End005

Thank you so much! I really appreciate it. Turns out, the language was under Street category rather than the STR.

Thanks again!

Fokker

The rules for STR begin under Street. You can do anything allowed in Street.