Allroad tyres was: How much do you pay for tyres?

[C1J1Miller at aol.com]

> > If 225 45 17's fit an (S4), 215 55 16's fit the 2.8 and 2.7, & 255 40
> > 17's fit the 4.2 then why wouldn't 225 55 17's fit on the base A6?  Only
> > 5mm more in sidewall height than the (S4) tires.
> 

I'm not sure of the stock size used on Andrew's A6.  My '91 200q20v came with 
215/60r15 tires. Comparing those to the allroad at 225/55r17, the allroad 
tires would be about 6% bigger than my stock size, which might not fit, and 
would cause a significant speedometer error (they're about 2 inches greater 
in diameter).  Usually you try for within about 2% of stock size.  I believe 
the A8 also uses a larger overall tire diameter than many other Audis.
HTH, Chris Miller, Windham NH, c1j1miller at aol.com, '91 200q20v
btw... good tire comparison calculator linked off my site, 
http://members.aol.com/c1j1miller
direct link is:
http://www.venommotorsports.com/howto/wheeldiameters.htm