will GT3 wheels fit?

[vmb]

a shop across the street from work has these for sale. They are listed as GT3 or Carrera s4 [sic] wheels:

front: 18x8 ET 50
rear: 18x11 ET 45

Will these fit my '79 930? Has anyone fit these before? Will I need different spacers, new studs, adapters or anything else? I'm not so much interested in looks (keeping original fuchs for street) but rather looking for bigger rubber for track use. Thanks!

[JFairman]

With the right spacers and longer studs, or hubcentric adaptors on top of the origonal rear spacers, yes.
I have 996TT wheels on mine and they are the same size as the ones you mentioned.
The fronts are 50mm positive offset and the rears are 45mm positive offset.

If the wheels you are looking at are the same offset, then 1.5" hubcentric adaptors go on the front hubs and 1" ones go over the origonal 930 rear spacers that are 29mm thick on the rear.
If the rear tires end up too close to the fender then 21mm spacers will move them in 8mm or 5/16", or you can have a machine shop take the origonal ones down.
Make sure they make the hubcentric part deeper too if you do that.

Ernies Alloy's in Miami can probably help you out on the right spacer sizes.

[vmb]

Well, these turn out to be the same offsets as the 996TT holllowspokes that many others have fitted to the 930, although with a variety of spacers/adapters being needed. Doing a search just confused me more, but reassured me that it has been done many times over

So, I pulled the plug and will be picking these up later today.

I should have asked earlier, but does anyone know the specs of these wheels compared to the hollowspokes? I could not find weights on the GT3 wheels, nor any reports of strength or reliability concerns for either wheel.

-Vic