With the requirement of 19" wheels to fit the brakes on the GT350 the tire options are going to be few and expensive. Fast cars need big brakes which means big wheels and tires and if you want to play you're going to have to pay. Below is a list of tires, sizes for fitment on the GT350 and prices for two tires. The recently released NT01 will be a good option and I think they are just as fast or faster than the Cup tires. The Hoosiers and Trefeo R's will be the fastest but I think I'd only drive the R's on the street to and from the track. There are 19" slicks available too but someone else will have to do the research on them. For a street legal track tire the Trefeo R in a staggered 305/325 fitment should be the hot ticket but their cost is not for the faint of heart! The fastest should be the R7's in a 315/325 staggered fitment. It will probably be four NT01's in a square setup for me. :
Any other options out there?
Nitto NT01 305/30/19 $732
Michelin Cup-2 295/30/19 $1,050
Michelin Cup-2 305/30/19 $1,106
Michelin Cup-2 315/30/19 $1,150 est
Michelin Cup-2 325/30/19 $1,188
Pirelli Trefeo R 295/30/19 $1,040
Pirelli Trefeo R 305/30/19 $1,120
Pirelli Trefeo R 325/30/19 $1,186
Hoosier R7 295/30/19 $778
Hoosier R7 315/30/19 $918
Hoosier R7 325/30/19 $918
Any other options out there?
Nitto NT01 305/30/19 $732
Michelin Cup-2 295/30/19 $1,050
Michelin Cup-2 305/30/19 $1,106
Michelin Cup-2 315/30/19 $1,150 est
Michelin Cup-2 325/30/19 $1,188
Pirelli Trefeo R 295/30/19 $1,040
Pirelli Trefeo R 305/30/19 $1,120
Pirelli Trefeo R 325/30/19 $1,186
Hoosier R7 295/30/19 $778
Hoosier R7 315/30/19 $918
Hoosier R7 325/30/19 $918