108mm to 100mm conversion....

Mark W. Byrum, Jr. markbyrum at erols.com
Tue Aug 6 12:31:50 EDT 2002

I corresponded by e-mail with a rep from Ronal wheels who advised me
that the 4 X 108 bolt pattern is the same as 4 x 4.25" (which fits,
among other applications, the Ford Probe) - he was encouraging me to
look toward Ford Probe applications among their products for fitting on
my '89 80Q.  I am unsure how the offset compares, but doing the math on
the bolt spread results in 108 mm = 4.251956".  Perhaps Audi was looking
at 4 1/4" compatibility when the 108 mm decision was made.

luke wiegandt wrote:

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> hiya guys... was wondering what is involved
> in converting my type 89 quattro from 108mm 4 bolt
> to the standard vw/honda 100mm 4 bolt...
> i want to do the G60 brake upgrade anyways...
> so what do i need besides G60 calipers, G60 rotors?
> i think i need bearings too.... i bet ill need new bolts
> too... anyone done this?
> why would audi do such a thing as use 108mm?
> wouldnt it have been more cost effective to use the
> vw parts that were already 100mm?
> now on a slightly differnt note anyone want to buy
> '88 audi 90 stock rims with yokohama a-509s
> (unidirectional) and a set of stock '84 5000
> rims with yokohama winter tires? both 14" 108mm
> thanks guys...
> luke wiegandt
> '88 90 turbo quattro
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