Hey Jeff in Colorado,
Good to hear from another Supra running Solo 2. I could not remember what street prepared class the Supra gets bumped into. I am getting the rule book so I can read the "fine print" on just what is allowed. How do you like the 255 fr/275 r set up? Does it have good stick on DOT race rubber but still allow the manuvers like sudden throttle lift induced oversteer to overotate the really tight slow stuff? Locally we also hold Solo 2 events on a road racing track which is a total blast. So you really get to set up a long four wheel drift through the sweeper and roll into the throttle on the exits. They just put a 5 cones slalom or gated slalom in the middle of the straight to keep you from busting the 80mph mark. I say this to ask you are you comfortable with the 25 on the front. Tire Rack doesn't "recommend" anything bigger than 245 but what that is based on, I am not sure.
As to tires from talking to the guys who are contenders for the divisional Super Stock title in my region, the opinions seem to run along the lines that Hoosiers may have a slight edge on times at least intially but that after time, they fall off in performance more than the Kuhmos. The Kuhmos definitely last longer and are significantly less expensive. I think they have the same durometer though. There was an article in last month in Grassroots Motorsports where they did a tire comparision of the Kuhmo Victoracer, the Hoosier, and the Toyo DOT race rubber. The end result was that the Kuhmo ended up slower than the Hoosier by a margin that was next to nothing. The Kuhmos were slower at first and once they get the pressures right, they were great. Would love to hear your thoughts on if you think the 255/275 is about right for stock rims since I am still super stock.
Barry 94ttsupra 6sp.