9934USC

http://sacramento.craigslist.org/cto/1999525281.html

FRONT 225/40 R 18 REAR 285/50 R18

Will these fit my 97 993 narrow body? Just bought the car (don't even have it yet) and know that I want new wheels but I'm not sure on the sizing. These seem like an awesome deal.

Thoughts?

Bill Verburg

They look like one of the optional wheel sets from a 993, fronts will fit fine if they are 8" ET52, the question is the rears, n/b will want 10" ET65, w/b will want 10" ET40

also the rear tires are far more likely to be /30 not /50.

The width & ET should be on the wheel either by the valve stems or on the back of a spoke

J.A.W.S.

it's the SportDesign wheel. approved (OEM) for the 993 NB in 7.5x18 ET50 or 8x18 ET52
fronts and 10x18 ET65 rears. and offically only equipped with 225/40 and 265/35 tires.
(further OEM-sizes for boxsters: 7x18 ET52 & 9x18 ET52. no 911 WB-rears OEM...)

make sure those are OEMs. there are replicas around...


and btw: they are as heavy as the T2s.

Ocean Blue C2S

Great information guys!

A couple more questions, I have a WB with stock wheels: front 205/50 X 17, ET 55 offset
and rears 255/40 X17 ET 55.

Here are a couple of questions after a buy I could not refuse, it is a set of BBS wheels for a NB. Part numbers 993 362. They are Fronts: 7.5 J X18 ET 50, so that must move the front wheels 5mm further out?
The rears are also part # 993 362. They are 10JX18-ET 65, so according to Bill Verburg I should have an ET of 40 for the rears? Can I buy spacers of that size, they must be 25 mm spacers, right?

Do the spacers just "mount" behind the wheel?

Last question: Do I then need longer wheel studs?

Sorry for the many question, I really appreciate the comradery on the RL!

Cheers,

Bert

bobt993

You can just add spacer and 25mm will be a solid unit with studs on them to remount the wheel too. You actually may need to cut down the existing studs or replace them as some rims have a solid center and would actually hit the factory wheel studs protruding from the spacer. I would opt to minimum of 8inch rims up front. If your interested in tracking the car go to a wide tire than a 225 up front . Especially with a WB car. Tire combos vary alot on the 993. I ran 235/285 combos and even 245/295 with rolled fenders on a NB. I now have 275/315 on an clubsport WB setup. The 245 up front rides much better on a 8 or 8.5 inch wide rim.

orangecurry

Your part numbers are incomplete; they should be 993.362.xxx.xx

Have you taken your current rears off? They might already have factory spacers, as 9J ET55 would sit very 'inboard' on a WB car.

Lastly the 'new' front wheel won't stick out 5mm further - don't forget the 'new' wheel is wider at 7.5J - so as offset is the distance from CENTER line to the face that fits to the hub, combined with offset of 50 (instead of 55) means that it'll be something other than 5mm.... not sure what offset always does my head in.

But I interchange both such wheels on the front of my 993 and they both fit well.

Ocean Blue C2S

Orangecurry,

Yeah, the current rears already have spacers, indeed they are the factory spacers, I tried the BBS wheels on the back and even with the ET 65, but now with 265/35x18, instead of the stock 255/40X17, it seems that the "Track" at the rear seems about the same, though I thought it would be wider "Stance", thus making the 993 more stable (if that is the right word?).

Bobt993.

I will take a wheel off and measure the current spacers, maybe I don't need any, perhaps if the BBS had the "correct" offset ET 40, then the spacers would not be needed?

Coming from years of owning a Porsche 356, (5 in total) this is all a big mystery to me, but I am learning fast.

thanks guys!

Bert
Calgary, Alberta
Canada

orangecurry

Bert - apologies if I'm being a bit dim, but did you fit the ET65 wheels WITH the factory spacer or without? On a WB car, as you said, you need a 25mm spacer on an ET65 rear wheel to get the wheel located where the engineers said it should go.

TT-911

Bert,

To keep it simple:

You do NOT need spacers in the back, leave the factory spacers (31mm) on and just mount the ET65 BBS wheel and that is a 100% perfect fit : ET34

In the front you will gain a few mm compared to you current wheel (7 versus 7.5 / ET50 versus ET55) = difference 11.35mm more outside.

BSL

If these are factory Sport Designs (996 GT3 Mk1), then yes, they will fit a NB.

Thanks for the old photos Ron

Ocean Blue C2S

993S,

Thanks for that information about the spacers, that thought came to me in the middle of the night, and when I mount the BBS with the 10 inch wheels and the 265/35X18 the wheel sits the same (in the fender) as the stock rim and tire!

So, here is my final thanks to all you Listers, what a great site, what a great bunch of friends (whom I have never met...)

Air-cooled Regards,

Bert