Re: <E30> wheel offsets

[Mat635@xxxxxxx]

Kurt Z. writes:

>  Most importantly you need to have 
> 
>  the right offset.  Could someone please post to the digest the correct 15" 
> and 
>  16" offsets for E30s?  My recollection is that 15" wheels need a 25mm
offset 
> 
>  and 16" wheels need a 20mm offset, but I'm not sure.


Hi Kurt,

Rim diameter really has nothing to do with the offset. It is the rim width
that matters.

Here are the general offsets for standard E30's ('iX and M3 excluded).

6" rim    = 35-ish
6.5" rim = 30-ish
7" rim    = 25-ish
7.5" rim = 20-ish

You can be off by a few either way, but not much. (If you have to err, it's
usually better to go lower in offset than higher.) The lower the offset, the
more room you have btwn the strut and the wheel/tire. However, there are
always fender lips to foil your plans!

Good luck!

Matt Meakin
#121191
Tarheel Chapter / SCCA / ISOP
'88 325iS (club racer under construction)
'79 635CSi euro (my baby)
'79 635CSi euro (faaaaast daily driver)

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