MM951

I have 285/30/18 on the rear of my 87 951. I think the offset is 52mm. They rub a tiny bit

MPD47

I know of several stock bodied 968 and 951S running 305's.

I personally ran 295's with zero issues and would put money that with the proper mods you can put 335's under a metal bodied non widebody car.

-M

333pg333

^ That's a big bet there Mike. 335's? I know that involves your special adaption/grinding but that's a lot of rubber right there, plus you're talking 12's now yes?

MPD47

EXTENSIVE fender rolling. You'd actually be flaring the bodywork out approx 3/4" with heat/roller and distorting it in a "flare" type motion. 18x12's.

Yes offsets have to be DEAD on.

333pg333

Are they 12's there Mike? They're sticking out too far on a road car but nice work nevertheless.
I'm still checking into something for mine. I can get the WORK's over here but not cheap.
Also everyone is talking about how big they can stuff under the rears but no good if you've only got 255's up front or whatever. I'd like 11's and 12's as my setup.

MPD47

Yep, those are 996 GT2 18x12's.

-M

333pg333

I've got 255/35 f and 285/30 r. From what I gather around the world, you don't want to have more than a 30mm difference front to rear. Some racers run the same f to r and that's up to 305's! In my opinion you'll be fine with those sizes. The only other thing you have to look out for is the outside diameter of the tyres themselves. Again I would refer to Tirerack as they have an excellent database for all of this.

333pg333

I don't think so, but it also depends on how low your car is, what neg you run, how big your springs are, how much compression you get on your suspension. My car is very low and I can only just fit 9's but that's with R-spec Toyo R888's and R-spec rubber is often a lot wider than they say on the side. It also depends on what your planned use is? For a road car you could get away with 8's and 10's I'm guessing as much as you think you push hard on the street, it's never as hard as at the track. What sort of tyres are you thinking of? Street or R-spec? If you're going for more of a track setup then ideally you would want closer than 245/285 combo in my opinion. You can dial out understeer of course, but you're creating an issue which needs to be fixed before you've even hit the track. MPD47 could probably give you a better idea of what size you can do on the fronts. Also why do you have to have the hollows? I mean they're strong and cheap (comparatively) but no point getting them if they're not right for you.

333pg333

Sorry to keep posting my file pics but as you can see here mine is pretty low and I get a little bit of rubbing on the fronts. Late offset car 9" et 51 255/35 R888's.
Actually come to think of it my car is lower now than that picture, but you get the idea. I couldn't run 10's up front.

333pg333

Um, I didn't know the Boxter had that offset? If that's the case, they would work perfectly. I had some older Boxter wheels on my car from the PO and they had big spacers because of the low offset so maybe they changed their offsets too over time?
EDIT: Mine were on the front though so maybe they are the 9" rears off the Boxter?

DVC

A fellow black sheep had 315's mounted for 2 weeks before he fragged his 951S tranny (w/ GKN axles). Granted, he tracks it weekly. I think our cars need a fuse, and turning the tires over is a lot cheaper than hooking.

mj951

offset diagram:
http://www.tirerack.com/wheels/tech/...jsp?techid=101

DrZ1

I bought a set from a rennlister with some curb rash, in the centers, which are grey anodized. I will re anodize when I paint the car. Waiting on 968 castor blocks to get tires/wheels on and 4 wheel alignment. I have the fm-10 8" & 10". I chose 225 /275 for street car with possibility of DE. I may go 235/275 next time.

Will these actually be the same or lighter then phone dials? I fiqured close.

Steve

333pg333

That's interesting Travis? With the supposedly better axles too...not good news. If he tracks it all the time, I wonder what condition the box was in though? What sort of tracking, any 1/4 mile stuff? What sort of power/tq also?
thx

333pg333

Has to go out doesn't it?