Quote:
Originally Posted by strat61caster
265 on 18’s trophied last year and is likely a contender to win. 
245/40/17 on 17x9 is lemming effect, not proven imho, but because nobody has been playing around us lemmings are safe to stick to what we know. Tire racks test has me interested in trying 225 on a 9 but it’ll probably be post nats for me. |
Agreed.
A lot of what people recommend and do is based on anecdotal evidence. 245s on 9s appear to be a very good combo and may actually be the optimal tire/wheel setup, but unless we have objective studies similar to the TR test, it’s hard to say which one is the best combo for sure.
The TR test shouldn’t be accepted as canon, but it at least warrants consideration. I don’t think it is conclusive that 245 on 9 is the best option for track/autocross duty. It also isn’t a bad combo.
Btw, the TR test wasn’t about the best combo for a GR86. It was just about the best tire and wheel width combo for 225s and 245s. It is possible our cars do even better with 265s on something else. It’d be sweet to have TR’s resources and do tests all day to figure out the best option for the 86/BRZ.