"Tire" stock class question

[keith]

I tried to search for this but had no success.

What are the rules for the stock tire class (TBS) regarding sizes and treadwear?

Thanks,
Keith

[jdpeterson21]

Treadwear must be at least 140, but tire sizing is unrestricted.

[Wheelman_13]

Treadwear must be at least 140, but tire sizing is unrestricted.

As limited by stock wheel size in parallel with normal stock class by my understanding.

[scottgib]

Wm_13, +1

[integra55]

to condense the answers .... the stock rules still apply ... i.e. OEM diameter and width and offset within 1/4" ( this so aftermarket wheels [lighter] can be used) .. then any tire as long as it's 140 tw or above

[keith]

Thanks!