been quiet on this thread, so I decided to do a little resurch of my own,,
I haven't seen the 2021 SCTA,AMA tire requirement rules, but based on the DLRA rules which are one year behind the SCTA rules, it states :- "201+ = In excess of 200mph special tires for racing as designated by the manufacture must be used" note, there is no mention of tire's speed rating requirement,,
The Bridgestone R-11 is a tire specially designed for circuit racing (R = Racing), with a speed rating of "V" yes folks that's 149mph !!
However the Bridgestone RS-11 is a Racing/Street (RS) designated tire with a speed rating of (W) at 168+mph
The way I read this is that the R-11 being a "special" tire for racing is\was meeting the rule books requirements, however the oversight was the speed rating on this particular tire,,
I would suggest that the RS-11, with a speed rating of (W) same as the old Bridgestone 003 would be a better choice to use