Greyhound, I don't have a GT3, but track my 997.1 TT alot and use Hoosier R6's exclusively. I know R6's are DOT legal, but just be very careful about driving in rain or wet conditions, also be aware of higher potential of punctures and road hazards. I personally would not invest in TPMS. Get a good quality air pressure gauge as you will want to adjust beginning/cold pressures and hot pressures. Just takes a minute and is a good habit to get into. On heat cycles it will vary based on tracks and how aggressive you are, but generally expect 8 to 12 HC's. I personally don't pay to have tires HC, but I do HC them on track per Hoosiers instructions ( I have three set of wheels to accomplish this effectively ). I think you pick up a couple HC's if you properly HC tires and give them a week to "cure". I will tell you for sure...once you use R6 on track you won't want to drive on anything else! Good luck and your next question/posting will be about trailering your car to the track! Final thought...love the OZ's and a great value.

 

Thanks for the info vpmick, etal. I have found my limiting factor( for fun, safety, and lap times) besides my skill level and car seems to be the tires-every time. Last event I really wanted to keep pushing, yet my car just would not stick(I was in the groove). I have been envious of those fresh, sticky Hoosiers on a warm, sunny SC Saturday afternoon. I do see a trailer in my future-although I love driving to and from the tracks. One question, 18" v. 19" Oz wheels?

 

18" BBS 3pc motorsport

 

are 235/35/19 front and 315/30/19 rears ok regardless of tire selection? will wider front tires fit and help with turn in or will it mess with balance/computer of car? I had my car aligned for a moderately aggressive track use. Don't know the numbers but have the front toed out and rear toed in and increased the camber all around. Thanks