Reply to "GT 5 Wheel Offsets"

Coz,

Funny you should ask, I just measured the backspacing on my stock GT5-S wheels just before I sold them. I sold them to a fellow who went to the Group 4 look and they fit just fine.

The backspacing measured as follows:

Front---> 4 3/8" to the flange (tirebead seat), 4 5/8" to the outermost lip

Rear ---> 5 1/4" to the flange, 5 1/2" to the outermost lip

I've included both measurements because different wheel manufacturers use either or.
These measurements do not include the 3/16" spacer that I had at all four corners.

I'm pretty sure that all of the 10" & 13" Campys are the same offset, respectively (I've never heard otherwise). I don't think deTomaso would go through the added expense of having an identical wheel cast with a different offset. However, there are a scant few pairs of 14" rear Campys, but I know nothing about them (except that they exist). I assume they would be stamped 14", like mine were stamped 13" & 10". I've heard that these were only offered on factory race cars. I'm not sure if they were available to buy over deTomaso's parts counter.

Hope this helps.

Michael