Quote:
Originally Posted by BonzoHansen
Out of curiosity, how fast do you have to go before there is some kind of SFI requirement on the wheels?
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Quote:
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Originally Posted by NHRA Rulebook
5:2 WHEELS
Hubcaps must be removed for inspectors, who will check for loose
lugs, cracked wheels, worn or oversize lug holes, and condition of
spindles, axle nuts, cotter pins, etc. Snap-on hubcaps are prohibited
on any class car. The use of “spinner” style wheels or any wheel design that incorporates movable pieces while vehicle is in motion or stationary are prohibited. Each car in competition must be equipped with automotive-type wheels with a minimum 12 inches of diameter unless class requirements stipulate otherwise. The thread engagement on all wheelstuds to the lugnut must be equivalent to or greater than the diameter of the stud. Length of stud does not determine permissibility; length of the engagement between the stud and hex
portion of the lug determines permissibility. Maximum rim width on any car: 16 inches.
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Nothing in the General section at least. I know you are NOT allowed to use spare TIRES on the track, but the rims don't seem to be an issue.