RSRS

Hi

Can I run a 245 / 35 18" front tire instead of the original 235 / 40?

The wheel arches are not widened, body of the car is stock.

I'm using standart wheels (8.5 x 18").

There is a cheap set of Kumho semislicks in 245 / 35 front and 285 / 30 18", but I'm not sure if this size of front wheels will work on my 996 MK2 GT3.

Thanks
RSRS

85Gold

They will work just fine, the diameter is the same front and rear so no ABS issues. We ran the 245/285 combo, Hoosiers mostly, for 3 years in SCCA Autox including winning the National Championship in 07.

Peter

Dudley

Just a note. My 245/40 Nittos wore out my wheel well liner. No big deal but I had to replace mine.
Oh, and make sure your fenders have been rolled.

RSRS

Thanks Peter and Dave for that input. My GT3 have rolled fenders and I'm driving arround 3° negativ camber. But I'm also using wheel spacer.

Was your car very low Dave?

RSRS

And is there any advantage compared to the standart size (235)? Better grip, less understeer?

Dudley

No, my car is at the stock height.

85Gold

When we ran them we had -1.8 front camber, no spacers, stock wheel offsets, car was not lowered. Yes more rubber = more grip. If the car is understeering either loosen the front bar or stiffen the rear bar. We ran 1 off full stiff on the front and full stiff on the rear for Autox so the car would rotate. For track duty we softened the rear bar 1 hole. Lots of rotation on the Autox course is good but not so much on the track

Peter

Leigh2

The Nitto would have been a 245/40 and they can rub, the 35 aspect ratio 245's fit a lot better.

spare tire

Your initial question about 245s fitting is more complex than you know. Whose 245s make a huge differance. Go to TIRE RACK website and look up your exact stock tire and click on SPECS. Look at all the good info on rolling diameter, tread width, section width, revolutions per mile. Then Click on the tires you want to buy and check click SPECS again. You can see the dimentions vs. OEM. Posters who are giving you information are talking of Nittos, and Hoosiers. Kummos will be slightly different.

85Gold

The operative word is slightly different. V710 245/35 and 285/30 18 are 24.8 diameter Hoosier R6 245/35 285/30 18 are 24.7 and 24.9 diameter, this is not an issue for ABS. I have extensive experience with both Hoosier and Kumho in those sizes. .

Peter

Serge944

Running 9 degrees of caster, -2.5 degrees camber and Nitto NT-01 245/40s on 9" 46mm offset wheels, I get MINOR non-audible rubbing. As in, I can never hear it, but there is a light mark on my fender liner.

jrgordonsenior

RE: Fender lining rubbing, the cup car liners are taller....

996FLT6

What do liners do? I've been thinking of removing them unless it's there for a good reason. Are u on stock suspension? If so always thought to optimize full advantage of slicks- Motons or the like is needed? Regards. Mike

DAB+

I would imagine that apart from protecting the inside of the fender against stone rash, water ingress, etc., the liners should get a smoother flow of air around the wheel.

mkk62

my front left liner is nearly gone..running 245/40 kuhmos (my car is really lowered)..only issue is that the hose for washer fluid to headlights (never new i had them) was slashed during track day so i just cut them and tied them off...but that hose does run just over the wheel liner (stupid)
i was told otherwise dont need them..when mine go im leaving them out....runing -2 in front

peter are you running 285's in front?
mike