If you are looking for a tire that won't wear out super fast and will still be fast in autox (esp with camber corrections), I suggest the Goodyear Eagle SC3's... I was using those (265's squeezed on 8.5"s in Super Street) and they held up to a lot of abuse. In fact, I used them on my EVX-prepped car yesterday at our local autox (I am preserving my yokes for Champ Tour this coming weekend) and the goodyear's still held up great and performed very well (especially given that it was a hot day). I do recommend spraying the tires frequently starting after your first run if you are running in a hot climate.Did you mean that is a good way to improve?
Won't run in the rain or cold.
I should add that I know <= 200 TW tires vary wildly, they're not all of a kind. Some won't last long for either track or street use. But some will/would handily outlast a 300+ TW tire if doing much track time (independent of whether it's actually that much faster than a 300 TW tire)...or at least that was the case with the tires of a decade ago. But autox is different from track and I have no autox experience!
Sounds like I should be fine starting off with 300 TW street tires, not likely to destroy them right away (as long as I keep close tabs on pressures and any uneven wear happening).
And you are choosing the right stuff with MPP - My stuff performs flawlessly!