Darkstar1

Have any of you run the 315/18 NT-01 on a 12 inch wide rim? Nitto recommendations are for up to 11.5. Just curious if you guys think the extra half inch would be OK. I do not want to go to the 335.

Thanks

nwGTS

I'm running them right now (WB GTS if that matters). CCW C14 18x12 w/ Nitto NT01 315/35/ZR18.

They work great and fit great

nwGTS

Here's a quick pic I took a couple weeks ago... while falling over apparently.

You can see the fitment here though.

993GT

315/30-18 on 12" wheel is factory 996 GT2 fitment

Darkstar1

Thanks Guys! I figured OK but wanted to make sure.

mooty

did wheels arrive in good shape?
i have ran 305 315 335 nittos on 12" wheels on different GT3/RS variants.

Darkstar1

Yes Mooty I got the wheels and they are great! Thanks again! Now fitting some tires and checking clearances.

Thanks again...

GrantG

For another data point, the stock wheels on a 991 GT3 are 12" and they come from the factory with 305's (even though the tire specs say 11.5" is maximum).

T10Chris

Anyone know what the actual widest width a 315 can fit? Is 12 the limit or can it be 12.5-13? Don't want to have the "hellaflush" ricer look, but want to maximize the contact patch... Also trying to avoid 335s.

993GT

I'd say 12" is widest you'd want a 315 to go on...don't think there's any possible contact patch to be gained going further wide

Rob996

I'm running 305's on 12 x 18 rears..

I've read somewhere that track tires should fit square on the wheel, helps the tires last and perform better than puffing out slightly.

powdrhound

For NT01s:

315/30 use 11-12"
305/35 use 11-12"
335/30 use 12.5-13"

I've run 20+ sets of these tires. The 315s were my least favorite. The 305 on a 12" is a great choice, far superior to the short 315. I would not do a 335 NT01 on a 12 as it's crazy pinched. Always best to use the widest wheel you can per given tire size. Stretching the bead a bit will stiffen the tire a bit and sharpen up the steering response while maximizing the contact patch.

CosmosMpower

Yep have run this on a 18x9, the nt01 has a mushy sidewall so a wider wheel is good.

PAULUNM

What would you run on a 996tt that's still AWD? I am on GT2 sized NT01s, and I notice the 315 does roll over a lot- wearing the outside edge of the tire.

I don't want to move to a 305 if the diameter is too different than the 235 front. And I don't want to move to a different front tire as I don't have GT2 fender liners.

My next step is to increase pressure in the rear, see of that helps.

powdrhound

With awd you are stuck with the 315 in the rear as you need the rear to be slightly shorter than the front. The 315s are just not a great choice as the load rating sux compared to the 305 or 335. That's why it feels so squishy compared to the 305 or 335. Once you get over 35psi they will get greasy. Best advice is to rip out the awd, add an lsd and run the 305 with a 245 front.