Streak

What size front tires should I be able to fit on the front of an 86 911? I have 7x16 Fuchs and run RA1's. Some fender rolling is evident.

Everyone says I should put 225's on but the tire guy says they won't fit and the PO had 205's on all 3 sets of wheels.

I have 7x16 Fuchs and run RA1's.

Is there a reason I can't put on 225's? I was told that the suspension was narrower allowing for wider tires in 87-89 cars vs 84-86? I've also been told that's BS and to get 225's. I don't want to damage the car or worse.

chrisp

225 no problem, 245 if you really wanted to but you'd want an 8" wheel for that.

Bill Verburg

That is BS

225/50x15 will fit w/o too much difficulty. As mentioned far larger tires and wheels are routinely used for that application, though usually w/ wheels w/ a bit more (+) o/s

The issue is usually what to use in back w/ those fronts

Streak

I need to correct my earlier statements: my wheels are 7x16

I'm not very brite

Do 225's still fit?

Bill Verburg

That's going to be trickier. Many have done it but the o/s of 23.3 is on the small side.

Best would be to use a 225/45 x16 which wil give you an extra ~.5" of clearance over the 225/50x16

race911

Ran 225's for many years on my SC (and earlier cars), plus a 225/50-16 RA1 on 7X16 is the spec front tire for the PRC Toyo Spec 911 series. Roll fenders? Sure.

Streak

As a follow up:

Is there a minimum ride height to allow the 225's to fit? I will be having the car corner balanced and the ride height adjusted before the first event and if there is a possibility that the tire could rub in hard cornering I'd rather see if 1/2" higher ride would make a difference. I could be thinking about it all wrong.

Alan Herod

Near stock 83SC -- I run 235/40-17 on 8's and I know that 245s will work like others have suggested. I ran 225/50s on 7X16s for a long time. Only fender rolling and some negative camber. Rear not even close to a problem with 255/40-17s.

Gary R.

Just get a set of 8 and 9x18's from CCW and toss some 245's on the front and 275's on the back and quit messin around!!

BostonDMD

Streak, that is the size (Fiskes) I am running in my race car, I will be ordering my second set (CCW) soon....

Streak

Thanks Alan

Streak

There you go stirring up trouble!

Streak

I may have this wrong and I haven't checked but I think stock class CR rules say the wheel size can only be 1" more than the largest stock wheel offered? Right? Wrong?

chrisp

1" wider. rim diameter is free.

Streak

Nice.