TurboTim14

Just completed my order for a set of 19" BBS E88 for my 997.1 GT3 NB. Gold centers. Looking forward to getting these beauties on my car!

Expected delivery isnt until early March, but would like to get tires figured out next. Looking at the Michelin PS4S tire to mount to them. Question is which size? 235/305? 245/325?

My car is mostly street (90%) and the 235/305 is what I have now mounted to the stock wheels. I would like a more square tire on the car to fill out the fenders and not be as stretched, especially on the rear with the 305's.

So I'm thinking of going with a 245/35/19F, 325/30/19R. Can I fit without issues or rubbing with a proper alignment? I notice this combo seems to be what bbi uses on some of their street cup builds on NB cars.

RAudi Driver

Any N spec tire won't look at stretched as it won't have the rim protection bead. That bead really throws off the look of the wheel tire pack.

I think your choices in OEM sizes are the PS2 and Cup 2's.

Coop

I suggest you run OEM widths and N spec tires. There is really no need to 'go wide'.

ngng

no reason to run N either

jamesinger

It matters on the size and offset of the wheels + what tires.

For example, recently my friend put PSC2 235/305s on his 997.2 GT3. I have PS4S 235/305s on 997.1 GT3 wheels. I understand the offset is lower on the 997.2 wheels but the Cup2s just look wider in the same sizes.

Also, running 245/325 tires on the OEM 997.2 GT3 wheels (19x8.5 +53 and 19x12 +63) makes it so you need to do some alignment work to not rub. The rear tires also look like they are coming out from the fender with PSC2s. Oddly with the 997.1 GT3 wheels, it looks fine, probably because of the higher offset pulling the wheel into the fender more...

Last, some of the tire/wheel combinations make it so you will need suspension adjusting to get things to work properly. With aggressive set ups this might be as simple as an alignment, or as complicated as corner balance, additional parts, or fender pulling/rolling. For example, I really wanted to run Hankook 265 RS3s on my EVO, so I did the calculations and just bought them. I had the alignment and corner balance done with the set up figuring that Hankook 265 RS3s were about the same as Nitto NTO1 255s anyways...nope. My calculations were off. I had to have an expert very slightly pull and roll the fender for $$$. No one could ever appreciate that "mod" because it was invisible but the car would never rub with that set up under any condition thereafter.

I am not advocating any of these sizes or anything, I am just saying, it really matters on the size and offset of the BBS to determine what the best sizes are for your car. I bet whoever is building the wheels has STRONG opinions on this stuff!!

TurboTim14

Thank you all for the advice. I hadnt realized that about the N spec vs non N spec in regards to the rim protection bead. I never cared for that bead and it does throw you off when you look at it as it looks more stretched on the wheel.

That leaves me with Cup 2 or PS2. I think Cup 2's may be a little too excessive for my intended use and do not seem like a mainly street use tire. I think I may stick to the safe route and go with the 235/305 combination in the PS2 N spec tire. It shouldnt require any special fitment modifications and will allow the tire to look more square on the wheel from what I understand due to the N spec rating.

TurboTim14

To those with Cup 2 tires: How much street mileage are you getting out of a set?