The pros dont' alwyas use 200 or less. i mean, the limit that FD and D1 have is 160 treadwear or higher. Direzzas and others are like 280-320 usually.

It's always in just testing out which tires smoke better, charles.

Another big thing is tire sizing. You guys running 195's wondering why you're not getting smoke, when i'm on 255's. More tire out back means theres more tire to start smoking when you spin it up. That's the largest thing. Why does that viper or nomuken smoke so much? Oh , I think the 335s and 295s out back might have somethign to do with that

So far big smokers have been

RE040
ST115
711
DZ101