have you checked m.net faqs yet?
okay maff. thanks for the info. It's because I am looking for some better street/track tires. the s drives i have now are okay but I easily push them to the limit and end up drifting. Which is fun because I like drifting but not so good when I am trying to get better lap times.
of course that may also be because my suspension set up and the way I drive it but it's obvious that wider wheels/tires has a much larger effect on grip. which Is why i was looking at getting some 15x8 wheels before, I had looked at getting goodwin racings package that is konig wideopens 15x8 with toyo r888 205/50/15. but at that price I will have to wait quite a long time to be able to afford it. and if I got that package it will be a dedicated track set. as opposed to a street/track set.