dave1200

It calls for a 205 55 16 on th front and a 225 50 16 on the rear.

Has anyone run 225's all the way around?

Just wondering if it will clear the fender and not rub on the sides.
Is there a down side to going wider on the front?

Matt H

Works fine. May consider doing a 245/45R16 rear.
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jim944s2

It's quite well balanced w/ 225/50s all around, I ran like that because local club rules wouldn't allow 245's in the rear for street-tire auto-x. With a stock alignment you will get front fender rub in very hard corners. A more aggressive alignment (more negative camber) will allow the tire to miss the front fender lip.
My friend ran 225/50 and 245/45s, and somehow needed new fronts and ended up getting 205/55's again on the front (with 245/45s on the rear), he noticed some better steering response w/ the 205s (but he's running 225s & 245's again on his '86), -he's a good auto-xer, so not it's just some random street feel opinion.

dave1200

great, thanks. Mabey ill run the 225/245 set up then.

Matt H

Wow, you car must have a hell of a lot of body roll. I run MUCH larger than that on the front without rubbing.
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dave1200

what do you run matt? And what size rims?

KuHL 951

I had 245-40-17 on the front with no rubbing issues at all without adding neg. camber. Sounds like your offset or spacers weren't quite right or the car was lowered somewhat. There are many here with 951's running 235's up front without issues.

Matt H

I am using 255/40R17s up front on 17X8.5" wheels. This car doesnt move right now but they were on another car with the same setup and worked fine.

Steve, I am guessing he is referring to an auto-x condition because these car do exhibit massive amounts of body roll at auto-x.
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KuHL 951

Matt,
The new Fuzions will be on tomorrow! Any hints on quickly getting the mold release off the new tires..it's supposed to rain here Friday and I had a weird scary experience once with brand new tires in the rain...it was like driving on tapioca pudding the tires released so much slick-um. Don't laugh I was thinking of steam cleaning them first at the coin car wash just for good measure. I can see you saying "This guy is obsessive!"

Matt H

Steve, there is nothing sprayed on the tires or put in the mold as a release agent (molds arent really even built the way they were 2 years ago). Generally, I just do a nice burnout and call it a day.

There is nothing that I know of that you can do to make it better without just scuffing them up a little.
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Robby

To whom it may concern: The earlier cars, non Turbo S, did not have rolled fender lips. Turbo S cars did... this helps clearance a tiny bit, but, there is a lot of variance in EVERY area of these cars- Karl at Racer's Edge told me it was b/c they were put together by hand- not sure if this is true, but, when I added his Ledas, I had rubbing from hell on ONLY the left side rear- the helper springs....

These cars DO have a lot of body roll- just look at pics of them cornering- much moreso than even my 89 Integra- these chassis are probably as good as a 1st Gen Integra, but, carry an extra 700lbs- The chassis is not NEARLY as stiff as most modern day chassis though- just have to deal w/it- will never even out w/out tearing it down & building a new 951 in a completely dif method- Chris Cervelli always called them Flexi-flyers for a reason. of course, racers do not have this problem, as MUCH, as they are running much stiffer srpings (Cervelli ran 1600lb +) & most use roll-bars, although I doubt many do this just for Auto-X. Also, beefier sways & losing weight both tend to help. I was always told that these cars were way undersprung- believe it- I'm running 275lb springs up front & it feels pretty good for a street car- of course, it's tough to go much over this on street b/c of our ancient non-multi-link suspensions.... oh well... the trials & tribulations of owning a 16+ yr old car.... love it or hate it.... I think I'll be keeping mine though.... dont ask why.... just don't....

Serge944

I run 225/245 on my 86 944 with no rubbing.

tifosiman

400lb springs all-round here. No problems driving it on the street.

As far as the rubbing goes, 225's on the front for late offset cars are usually no problem. But, I have found that early offset cars do run into a rub issue on the fender with 225's on factory wheels with 23mm offset. It's slight. But it's there when on the cornering limit (even with a high spring rate), especially on lowered cars with close to factory camber settings. This would necessitate rolling the front fender lips as much as possible and dialing in some more negative camber.

As far as putting 225's on 16X7 rims, my personal opinion is that this is just fine unless you are autocrossing the car. If you are autocrossing the car, going to the 225's (and 245's on 16X8 rims on the rear) will give you too much sidewall squirm. Not noticable on the street, but it is on the autocross course. I can feel the difference. I think if one wants 225's all around, you should get some 8's for the front.

Again, only my opinion from my own personal experience. YMMV.

Robby

Tifo- I tend to agree on the sizing thing- the 225's on the 7" Club Sports looked great & I am running 225's on the 7" 993 wheels, BUT, PORSCHE went to 225's on 7.5's when they went to 17's on the 968, etc. They ALSO went to 255's on the 9" rear- 245's were simply too small for 9" wide wheels- a 245 on an 8.5" would be about perfect, as would a 225 on a 7.5"- although some wheels are measured differently, as are all tires, which pisses me off to NO END.... Anyway, I want a 245/40/17 on a 17x8.5 front & a 275/35/18 OR 285/35/18 on an 18x10 rear- POSSIBLY 18x10.5 rear. Not sure if that big of tire will fit the rear, but, would LOVE to have the $ to buy a set of Fikse Profile 13 or FM5's & run them... the extra RD of the rear 285/35/18 would really fill out the ugly rear wheel well area. that's the only ugly view of the car IMO- that wide, rounded fender is a dbl edge sword- it looks beautiful from some angles, BUT, the wheels look inset back there unless they are on perfectly AND the rolling diamter needs to be larger than stock, plus, the car needs to be dropped a tiny bit- I have 1/8" spacers on my rears- the 993 offset should bring the wheels closer in from what I understand, BUT, it did NOT- it looks better than w/the 16's- partly b/c the 255/40/17 is .35" larger RD than the stock 245/45/16. A little here & a little there- all adds up.... The 285/35/18 is almost a full inch larger RD though & w/THAT WIDE of a tire being larger in diamter, it might rub- I know people have run MUCH wider, but, not sure how they did it- otherwise, I know people run up to 285's w/out mods, BUT, usually on a 285/30/18. this reduces sidewall height by a touch.... somewhere in there is a line.... Tifo- do you know if a 285/35/18 would work? If not, what about a 275/35?

thanks
Robby

ibkevin

Dave,

225/50 front and 245/50 rear on my 83' (Turbo PD's) and 87' (928 dishes), no rubbing ever.