Was this at McClellan or Mather? My Michelin Pilot HXs were doing just fine
thank you until I did the Test&Tune at McClellan. That surface is just
nasty abrasive. I made it through more than 30 runs at Mather for McKamey
school with no visible wear, but one day at McClellan (~15 runs) must have
taken off as much as all my other events combined.
As for suspension, I've seen some FWD cars that seem to add visible positive
camber when the front end is loaded and turned (new Corolla I think?) while
others do not. Funny thing, as I would have expected struts to go negative
under load but I guess it has something to do with steering geometry. Good
luck and I hope an alignment will cure it!
Peter Thana
> -----Original Message-----
> From: Chris Tweney [SMTP:cat@pobox.com]
> Sent: Sunday, May 07, 2000 8:54 AM
> To: ba-autox@autox.team.net
> Subject: disaster at Sacramento
>
> All---
>
> I had a terrible shock yesterday at Sacramento's round 3.
> After 5 runs (3 runs of my own and 2 of my co-driver's),
> both front tires started showing cord on the sidewalls,
> right at the shoulder. I'm running Dunlop SP8000s with
> 1500 miles and about 30 autocross laps on them, inflated
> to 45 psi front/42 rear. After the 5th run I added another
> 8 psi each to the fronts; one lap later they were still
> rolling over, so we bailed out and drove home very
> cautiously.
>
> So whyinole should near-new Dunlop's give out so quick?
> And why would they roll over with such high pressures?
> I made sure to check my tire gauge against a couple of
> others, and it was in agreement.
>
> These tires are marginally larger than the stock tire
> (205/50 R15 vs 195/55 R15, a +0 fitment that Tire Rack
> said would be just fine). Everything else on the car is
> totally stock.
>
> Do I have some heinous suspension problem that would cause
> this? Or have I just had the bad luck to get two faulty
> Dunlops? Can anybody shed any light on this?
>
> -chris.
> #333 ES Hyundai Tiburon
> 'the sad little shark' (at the moment)
>
>
>
>
> ---
> Chris Tweney
> http://www.pobox.com/~cat
>
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