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09-15-2003, 01:36 PM | #1 |
Scooby Guru
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Join Date: Aug 2001
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Location: 2020 Crosstrek Hybrid
Vehicle:2015 FXT - DGM 2008 STI - Aspen White |
16" tire size preference for rallycrossing?
Are there other conditions, besides snow, where one would prefer a 205/55 (or narrower) over a 225/50 "all-season" tire when rallycrossing?
Would (water truck induced) mud over hardpack dirt disadvantage a 225 over the 205 since the 205 might bite through a little better? Other conditions anticipated: sand, silty flour sand, gravel over hardpack, hardpack. Not much loam or snow anticipated, but who knows?
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Last edited by Coati; 09-15-2003 at 07:37 PM. |
09-16-2003, 07:11 PM | #2 |
Scooby Guru
Member#: 9106
Join Date: Aug 2001
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Location: 2020 Crosstrek Hybrid
Vehicle:2015 FXT - DGM 2008 STI - Aspen White |
Bump!
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09-16-2003, 07:40 PM | #3 |
Scooby Specialist
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From what I've seen on the WRC and at SCCA Pro-Rally events, the pros always run tires w/ smaller width on loose surfaces. They only run wider tires on tarmac. There must be a reason.
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09-16-2003, 07:53 PM | #4 |
Scooby Guru
Member#: 9106
Join Date: Aug 2001
Chapter/Region:
SCIC
Location: 2020 Crosstrek Hybrid
Vehicle:2015 FXT - DGM 2008 STI - Aspen White |
Thanks! I was observing the real rally tires were tending towards narrower, too.
Time to ditch my bald-cornered 225/50 Dunlop SP-5000s for some 205/55 KDWS, maybe... |
09-17-2003, 01:00 PM | #5 | |
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Quote:
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09-17-2003, 01:28 PM | #6 | |
Scooby Guru
Member#: 9106
Join Date: Aug 2001
Chapter/Region:
SCIC
Location: 2020 Crosstrek Hybrid
Vehicle:2015 FXT - DGM 2008 STI - Aspen White |
Quote:
It was pretty amazing at the transformation: During real runs (where a water truck went through, then a grader, then one car then me -- in near 100-degree heat), the slurry on the surface was basically frictionless and my tires wouldn't bite through. However, at the end of the day there were (water truck-less and grader-less) fun runs and the tires comparitively HOOKED up on the exposed, rutted surfaces. I shoulda hung at the back of the run group and let the others sweep the mud off. It seems like the 205s might carry a relative advantage over the 225s in the looser conditions (soft over hard and soft over soft), and maybe the KDWS over the Dunlop in the same? |
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