ACSGP

on a narrowbody 964 so that the wheels are almost flush with the bodywork. Trying to locate custom, lightweight 1 piece forged rims that look close to OEM.

Found this:
http://www.work-wheels.com.au/products.aspx#product23

(The XT 7)

Should the fronts be a 7 or 7.5 inch width?

pu911rsr

The US Carrera Cups ran 8's and 9.5 in race trim, the rear wheels have a 68 mm offset.

joey bagadonuts

pu911rsr- Don't the Cups use a spacer in the rear for an effective offset of approx 50mm?

ACSGP- I'm not sure it's wise to push the wheels out as far as you've suggested. Under hard cornering, the fender lips may come into contact with the tires and cut them, damage your fenders or cause a very unsettling bounce. Unless you plan to use heavy duty springs to minimize roll, I'd suggest you go with 52mm front/47mm rear offsets. Fronts can be 7 or 7-1/2, depending on tire choice. Wider than 205's, should probably go on 7-1/2's.

pu911rsr

Joey,
you are correct they use a 18mm spacer,and yes the car's need some modification to fill all that rubber under fenders, but they look great!
Phil

ACSGP

Thanks Joey - don't intend to push it out too far, just want it flush or almost flush with the fender for it to look better.

joey bagadonuts

You can actually measure this yourself (just don't get carried away!).

If you're going with the same tire sizes, retaining current alignment specs and know your current wheel offsets, all you need to do is figure out how much further out you'd like them to stand. If you want to push them out 10mm, for example, here's how the math works:

Current offset: 55mm
Offset reduction: -10mm
New offset: 45mm

Good luck!

doruiacovescu

My question:
Car: 1990 c4
wheels: Mille Miglia Cup 1 7,5 " ET 23mm, 9" ET15 mm, 17 inch, 205front, 255rear
Spacers:??????
Thank you!

joey bagadonuts

Those wheels will not fit on your car. They were made specifically for early 911's with offsets which are much too small for a 964. These will stick out beyond the fender lips and adding spacers will only redce the offset and push them out even further.

Mille Miglia DOES make a replica Cup I wheel for our cars but those come with ET's of 52mm and 47mm.

doruiacovescu

uuuu! are you shure?
will they stick out much? Can i machine them?

joey bagadonuts

Yeah, I'm sure. Sorry.

To get the rears to work, you'd need to machine off AT LEAST an inch of material from the inner mounting surface. That's sure to compromise the strength and safety of the wheel and I would really discourage you from doing this.

Your best bet is to sell them and purchase wheels made for your car.

doruiacovescu

THank you very much! Well i did n t payed them yet. I risk a negative feedback. Much better than 450 euro plus shipping. Many thanks!

LPM911

not sure this answers your question, but at one point in time I had 18" wheels that were 18x8 et 52 up front and 18x9.5 et 47 in the rear. this was on the stock lug bolts.

ACSGP

Someone posted this on another 964 thread, and I've also sent a message to the seller.

http://cgi.ebay.com/PORSCHE-911-964-...item1c0fb158a6

Not sure if you can fit an 8" wide front rim (albeit 17" size) on a narrowbody. ET are also 58. Rears is 19 x 9 , ET 58 too. Anyone have any idea?

They're (a) magnesium and light (good, but will have them coated and painted to prevent oxidization); and (b) 17", so will be less prone to cracking through impacts, compared to 18"s and 19"s.

carnumber6

I have a set of RUF Speedlines that are offset et 56.7 17x 8 fronts and et 44 17 x 9 rear that fill out the back wheels really nice and let the front have good clearance

ACSGP

Can you post a pic of them? thx