Size limits not withstanding, I wonder if the rapid
transitions of solo are more agreeable with overtired
rims, which seem to be a little more forgiving of
sudden brake/steering inputs.  Note that E/F/G/H
production cars, which have 6-7" rim limits, all have
cantilevered 9-10" tires on them (the ultimate stiff
sidewall).
I know on my DSM, the 225's did not have much if any
less raw grip than the 245's, but I had to be very
careful not to overdrive the 225s (too much brake/gas
too late) or they would breakaway into a long slow
slide.  The 245's let me be about 10-20% more
aggresive (or careless) and just mush briefly then
take a set.  This was on Kumho's, not sure about
hoosiers.
Stan Whitney
--- ConeChasr@aol.com wrote:
> Why, exactly, is it that road racing cars do NOT use
> the widest tire that can 
> be squeezed onto the rim like us autocrossers?  Is
> it the wheel + tire weight 
> issue?  What about the "slop" factor (the sidewall
> bowing out) vs cornering 
> contact patch?  FYI, it is on a heavy, essentially
> FWD car with 6.5" rims.  I 
> am getting opinions on 245 vs 225 width tires (235
> is not an option).
> 
> TIA,
> 
> Daniel Ledford
> 
> 
> 
 
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