I have made a mind set through conditioning. Any street tire is GUD as long as it stays round, grips OK dry and real good in rain. 195/60-15 just fine. I can still out handle 95% of the cars on the road. Looks funny with my hammered fenders but
if you don't know what a 205/50-15 Hoosier is all about.
Anything more than that who cares.... I only drive fast on the AX course. where grip is everything.