jyoon

Are these two wheels the same or different? If different, how can i tell by looking at them? Was thinking about getting some for my 87, but not sure what's up. Thanks.

Jfrahm

It's easy to see the difference once you get a closer look:

http://wheelenhancement.com/style2.htm

The Turbo S Clubsport wheel is forged and has some decorative machining around the ends of the spokes. The pokes also flow into the wheel smoothly.

The Design 90's have spokes that look kinda like they are welded to the rim.

Clubsports are also commonly found in 7" and 9" widths, D90's are available in 9" but quite rare. They are more commonly found in 6" and 8" (911) or 7" and 8" (944.)

-Joel.
-Joel.

jyoon

oh, i see, thanks alot for that link.

jim944s2

Turbo S wheels would be nice on your car as they would fool almost everyone into thinking it was a 951S.

Crazy Eddie

Oh
One other thing you may want to know ..
That Turbo S wheel is the biggest PITA to keep clean
The pressure cast wheels are painted and are very easy to maintain
The forged alloy wheels are much stronger as well.
I have 2 set of the forged wheels. Both had to be refinished
They are very nice but a chore to keep clean. The anodized wheel
is really a thing of the past and for a good reason ...
Regards
Ed

jyoon

ooh, never thought about the cleaning issue. thanks for the advice, maybe i'll look at other options.

Crazy Eddie

If performance is not the most important issue for you, the twisties are real nice looking ...
Good luck
Ed

slim_boy_fat

I have D90s on mine 7.5" front 9" rear.

I think they are stronger than the forged ones, albe it heavier.

There is a guy over here who had one of the spokes snap on a track day with the forged wheels!!!

Koda

.

Forged wheels don't snap or crack unless they had a manufacturing defect or were repaired by someone...the forged wheels are both lighter and stronger than the D90s.

Crazy Eddie

Yes that is my understanding as well.
regards
Ed

slim_boy_fat

Manufacturing defect, after 16years. Mmmmmm

Have there been any tests carried out on the wheel strength?

I know they were lighter not sure they are any stronger...

steve g

As long as we're talking about the 944 Turbo Club Sport wheels...

What has anyone here used to thoroughly strip and clean these wheels ? I want to bring them back to a stock original finish if possible.

It appears as though the PO painted one of four with a silver finish The other 3 wheels are still slightly polished or maybe I am seeing the original adonized finish....

In any event - If anyone has done this before please let me know what works. Thanks.

Crazy Eddie

I had them prof refinished it costs about 650 for all four
They have to be re-anodized . I don't believe that is a DIY type of job
They as I said earlier, "a PITA to maintain" ... If I were to do it all over again
I would have painted one set and left one set orig. Almost all factory wheels are painted today ....
The Guy here in CA is Harvey Weidman Wheels. Nice, fair and honest guy and does great work.
Get'em painted and save your self the headache.
Regads
Ed

Koda

LOL, material defects don't go away by magic unless you know something I don't, they can sometimes take time to appear but that's more than obvious. Again (and this is common knowledge) forged wheels don't crack unless defects are present or have been repaird. (echo?)

Anyway you have taken this whole thread way off point...I think he just wants to know how to tell the difference between the two types. And his question has pretty much been answered...If you are confused about wheels you should start your own thread. But your boring me so till then...later

Crazy Eddie

I am by no means an authority on wheels but I have always understood that a forged material is much stronger that a cast material of the same type. That was back in my high school days of metallurgy...
It actually changes the grain structure of the metal making it stronger
see below
" The advantage of forging is that it improves the strength of the metal by aligning and stretching the grain structure. A forged part will normally be stronger than a casting or a machined piece. "
WTFKs
These wheels were very highly praised when they first came out ...
Regards
Ed