Bob, the Boss is using a P225/70R15. Definitely not enough tire. Boss is more of a statement than a performance bike. Still, I'd like to see a 100-140 race
For now, I'm going to stick with P305/35R18 (yes, two of them :lol: ), since that's the size on my vette. When the time comes to get specific wheels for the Rotus, I'll probably go down to 17", or maybe even 16" rims. I do have enough room on the inside to go to 335's in the back. I will stick with R compound tires. I can't see myself spending 2 grand on slicks that will last one season and can't be used on the road. I will go with Toyo RA1's, or R888s if my sizes come out.
BTW, I saw an article somewhere that said the Boss does the quarter in 10.4 seconds. I might be able to give that a run.
Busa is solidly in the 9's, so you'll have to deal with that