powdrhound

You will be fine..

Matt Lane

Thanks again!

Honkity Hank

Getting ready to buy new track tires, based on what I have read I am going to go with Nitto NT01 size rear 305 30 18 and 235 45 18 front.

Wheels are Ray's Engineering front 18 x 8-1/2 offset +49. And Rear 18 x 11 offset +60.

Nitto's are 25.39" and 26.42" F/R. Will I have any issues with fitment on the rear as these are 1.5" taller than the 295 30's that are on the rims now. I can always adjust ride ht but would rather not. My rear ride height is 130 mm now.

Thanks.

powdrhound

You wanna use the 245 with the 305.

Honkity Hank

Any issues with fitment on stock rims?

powdrhound

Stock will work but 18x9x12 is ideal

AudiOn19s

John (powdrhound) has alot more first hand knowledge here but I'm pretty certain you won't have any issues at the height you are at. I've been meaning to try some 305 rears on my setup for some time but just haven't gotten around to it yet.

I think if you start to really decrease the ride height of the car you may run into issue, but you're actually 2mm higher than stock based on the height you gave which should mean no issues at all.

The join of the fender and the bumper is where it starts to get tight with taller tires. There's also a crease in the fender well that could be an issue but you'd have to be really really low to have that come into play. Look at 996 cup's next time you see one in person they run a 680 rear tire which is 26.7" tall. I'm sure they don't mind "finessing" stuff to make things work but the bottom line is they all run them without any problem.

rbahr

I am running 125mm rear ride height with 315's. I needed to fold over the seam in the wheel well and machine one side of my previously round shock mount to stop ruining tires :-)

Andy, did you ever get your tires?

Ray

AudiOn19s

I did find a couple of scrubs locally that are mounted and ready to go for this weekend. I hadn't found any before the last track day I attended and drove around on a cold morning on old hard compound slicks that I couldn't get any heat into and never stuck.

jj1

@Matt Lane and Powdrhound, regarding 305 vs 315, don't forget how that effects acceleration and gearing. Powdrhound, I think you've posted you have 5-600hp so no problem there. Stock Gt3 probably still likes the taller tire. But if Matt lane is inquiring for the 993 in his avatar the 315 is likely the better choice IMHO.

cgfen

Post up a photo of your Rays?
I have a similar set of the Rays SL in 9 X 11 that I am going to try on the 3.
I've done a test fit with 245 / 315 and did not see any issues at stock ride height.

Honkity Hank

My Rays look identical, except 8-1/2" up front.

Honkity Hank

First set of NT 01's come this week, getting ready for Road Atlanta in a couple of weeks. Couple of Questions

1. Regarding heat cycling prior. Do these tires benefit from a heat cycle and rest period prior to extended use. I have read where Hoosiers R1's benefit from that, but nothing regarding the Nitto tire.

I could mount and give them a good drive on the country roads, any benefit to the tires.

2. Tire Pressures: What is your experience on hot tire temperature / range? And minimum cold temperatures? EDIT: I see Powderhound posted Thius: .

powdrhound

Just mount up and go. No heat cycle needed. They'll be slick for the 1st session till they get scrubbed in.

Honkity Hank

Thanks. Now trying to decide if I can just mount at home and drive to the track, about 60 miles each way. Thoughts (assume it is not raining of course!)