[W126 Coupe] Re: SEC Wheel Spreadsheet

[Richard Hesek]

I put together the attached spreadsheet mostly for my own education, but I
> thought it could be useful for others and it would be nice if you all
could
> do a quality control to check my data.
>
> The first tab in the spreadsheet provides for an easy way to calculate
how
> much the wheel diameter will increase/decrease from stock with various
sizes
> of rims and tires. I.e.; the standard wheel, 15" rim with 205/65 tires,
is
> 64.8 cm in diameter, if you go to a 17" rim with a 275 tire, a sidewall
> profile of 45 will get you the closest to stock with an overall diameter
of
> 65.2 cm.
>
> The second tab deals with the width of the tires vs. the width of the
rims
> and is just a sanity check for what tires will fit on any given rim
width.
> The idea is that you should not try to put too wide a tire on a narrow
rim
> and you would not use a tire that is narrower than your rims (unless you
are
> a low-rider - they do strange things with wheels..).
>
> The third tab deals with the offset (ET = einpresstiefe) issue. In order
not
> to complicate things,  I left out the any rim consideration. The idea is
> that with a reasonable rim/tire selection (see tab 2), the widest part of

> the wheel is going to be the tire. There may be other reasons for
including
> the rim width, especially in the front, but I am not aware of them.
>
> I put my sets of wheels in the spreadsheets.
>
>
> Regards,
> Axel J. Wulff
====================

Axel,
 I would like a copy of your spreadsheet. Please forward when you can get
to it.

Much thanks,
Rick Hesek