The 17's work "Ok" I guess but the 15 inch conversion is a NIGHT and DAY difference period. Even if ur not making big power the bottom line is the MT "Street R" are decent tires at best. I would spin them pretty easily with 900 whp.
The 15 inch conversion allows u to now run the MT "Pro Radial" and it hooks like velcro on the street and track and its light years ahead of the "Street R". Its the best tire ive ever owned by far!
I have them on my Turbo Mustang and they still hook at 1100 whp on 93 octane! Best tire ever.
I really dont get why more people dont make the conversion. Its just not that much money to do so and the benifits are HUGE! I mean if one rolls around with 17's and MT Street R's the car isnt gonna handle any better or worse with a 15 inch and a 275/60 or 315/60 so I really dont get the point of the 17 at all when one can buy a tire that will essentailly hook like velcro on the street.
Yep, the Pro radial sucks in the rain...... but so does the Street R. NEITHER have rain groves so again I dont see the point of the 17 inch at all to be honest.
I guarentee if ppl switched to the Pro Radial and seen how well it hooks up they would never look back. U dont have to run them all the time just swap em out for 20's whenever u want ur not married to them.