Slakker

Anyone have any favorite setups on sizes that have had luck with?

alpine003

996 GT3 spec is as aggressive as you're gonna get for NB model.

jj1

18x9/18x12 with NT01 245/40 18 and 315/30 18. I'm going to try a 18x10 up front soon but takes a little bit to get that working.

Edit: figure out what tire you want to run, check available sizes, than get wheels best suited for that size. Street, slicks, etc...

Sneaky Pete

Not to be a Debbie Downer......but from reading the thread in the DE section I think you need to adapt to your car 1st while keeping it stock before going to track tires. Look at trying to get the most out of the car as you can as stock. Then I would look at improvements like alignment, suspension, oil delivery and tires. If you do all the changes all at once you will have no understanding of how each component changed the drive. Baby steps. Good luck!

Slakker

I appreciate the feedback. I really do. In car control on Saturday I was able to induce understeer with wheel and throttle, oversteer with throttle and drift with brake and throttle. The balance on the car is nice right now. When I hit the corners right I get a nice bit of oversteer and when my entry was poor I would get oversteer.

I then got to go on the same course again the next day for Autocross and took the Hoosiers. They are 245 on the front and 275 on the back. About half the group had r-comp tires. The Hoosiers were a completely different experience as there was no understeer with the 245s. Because they are worn out though, they were slicker than snot on the first two laps. As they warmed up, the rear was still quick to slide but easier to control. Out of a group of 33 I finished 12th.

I've talked to several of the top guys/instructors around here that have seen me drive and they all said to move to r-comp and start learning how to control them better. With my suspension upgrades starting to show up, I would like to decide what tires I am going to run and then start getting everything adjusted out. (Our top local Porsche racing mechanic will be doing my alignment and verifying my installation and setup.)

tl;dr. Anyway, long winded answer to say while I am still a novice skill level driver with a great amount to learn, those who have seen me drive recommended I move on.

Slakker

Wow. Still trying to process 315s on the rear. What offset did you have to go with? Did you have to roll the fenders or do any modifications?

jj1

I have +68 with only -2 deg of camber and they fit no problem. No roll in the rear. I was using 245/275 NT01s but the rears were just getting worked. If your using Hoosiers (I drive my car to the track so slicks have always been off the table for me) the 275 rear may work really well.

Slakker

Ok, cool. I was surprised by how much of a difference the 245's in the front but they made the 275's seem really small. I'm shooting for R888 or NT01 depending on the size for exactly the same reason. Thanks for the input!

johneecatt

I run NT-01s - 235/40/18 in front (may go to 245) and 315/30/18 rear. With some camber it's a really good set-up. Won POC class championship last year with that set-up and set POC track records at Willow Springs and Auto Club Speedway (and drive to the track). It works!

Sneaky Pete

Don't be this guy....

Slakker

Why's that funny? Lol, jk, that's awesome! For the record, I don't want to be in the fast group. I wouldn't be able to ride along and see their lines if I was.

Slakker

Ok, sounds like 315/30/18 is the consensus in the rear. Thanks guys!

Slakker

Just saw the 315/30/18 is only rated up to an 11.5 rim width (Touo and Nitto). Any issues with putting it on an 18x12?

Sneaky Pete

At the least take care of your oil sump before you start pulling heavy g's on your motor with track tires. Ask me how I know.

alpine003

As Pete implied, DO NOT switch over to R comps until you get added reinforcement for your oiling. Upgraded oil pan baffle at the very minimum.