Anir

I am trying to decide if a used set of Cargraphic wheels will work on my 993TT. I want a proper fit, not some jerry-rigged solution, if possible. I'd appreciate any input.

From Robin's site, the stock wheels are 8" width and 52 mm offset front, 10" width and 40 mm offset rear.

The Cargraphic data is 9" and 47 mm offset front, 11" and 62 mm offset rear.

Using a cool <a href="http://toy4two.home.mindspring.com/offset.html" target="_blank">Wheel Offset Calculator</a>, I get the following data:

Front wheels: Clearance from strut housing to inside of wheel is 8mm less, and the outside edge of the wheel will EXTEND an extra 18mm.

Rear wheels: Clearance from strut housing to inside of the wheel is 35mm LESS, and the outside edge of the wheel will RETRACT in towards the body by 9mm. (The current 993 owner uses a 4 mm spacer rear)

The new wheels would be used with my current P-Zero C's (245/35-18 and 285/30-18), and eventually Hoosiers in 245/40-18 and 305/30-18.

To my eye, the new wheels look less-than-ideal for my car, but I am not sure that I am interpreting the data correctly. Am I better off getting custom made wheels by Fikse, Forgeline, or Kinesis for my specific car?

Viken

[quote]Originally posted by Anir:
<strong>From Robin's site, the stock wheels are 8" width and 52" offset front, 10" width and 40" offset rear. The Cargraphic data is 9" and 47" offset front, 11" and 62" offset rear.</strong><hr></blockquote>

Anir,

That should be 52 mm, 40 mm, 47 mm and 62 mm.

Anir

[quote]Originally posted by Viken:
<strong>That should be 52 mm, 40 mm, 47 mm and 62 mm. </strong><hr></blockquote>
Thanks, Viken! Post is edited.

Still gladly accepting opinions from the peanut gallery!

Jeff 993TT

Anir, if you want to sell your rims, let me know.. I'm looking for a new set of hollow spoke rims.

Jeff

Anir

[quote]Originally posted by Jeff 993TT:
<strong>Anir, if you want to sell your rims, let me know.. I'm looking for a new set of hollow spoke rims.Jeff</strong><hr></blockquote>

Jeff, the factory Technology wheels will still be my street wheels. The new ones are for DEs. Sorry! (But I'll keep my eye out for some for you!). <img src="graemlins/bigok.gif" border="0" alt="[thumbsup]" />

DJ

Anir,

I don't think those wheels will fit very well. This is the sort of thing that you want to get right. Aside from that, I didn't like running the 285 P-Zero C on an 11" wheel. The wheel is too wide for that tire, the tire behaves oddly, runs hot, and wears out sooner. The 245 and 305 Hoosiers fit fine (on 9" & 11"), as the Hoosier's actual dimensions are very wide compared to regular street tires.

I would order custom wheels from Kinesis or Fikse.

Anir

DJ,

Thanks for the info. With your Kinesis 9.5" and 11" wheels, what tires do you run? From the picture, it looks like they have too much grooving to be Hoosiers.



Do you think 10.5" rear wheels could do double duty - i.e. 285/30-18 P-Zero C's now, and Hoosier 305/30-18 later?

Glen

Anir, thought you might have missed this.

Author Topic: Forgeline 3 pc wheels for 993 TT,4S,S or 996
Glen
User
User # 548

User Rated:

posted 02-12-2002 16:28
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These are the 3 piece Competition approved 18x9 and 18x11 custom made to fit widebodies. They have a polished outer rim and natural finish on the centers. They are in great shape, look at link for description and pics. Best offer.
<a href="http://www.forgeline.com/wheels/wc3.html" target="_blank">http://www.forgeline.com/wheels/wc3.html</a>

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Thanks, Glen(C4S & GT5R 914-6)