Front tires were made for front tire loading, the carcass's are different, may
want to speak to the tire manufacturer, its and easy telephone call or two.
The newer z rated tires are radials and made for more modern rim geometry, may
want to either run v rated with half the tread or less, or upgrade to a more
modern rim. Joe
Henry Deaton wrote:
> What about using a Pirelli 130/70 ZR 16 front tire on the rear of your
> Sportster? Of course you'd still need to do something about the front,
> probably shaving a V-rated 19" tire.
>
> I've been looking at the tire rules and it looks like I'll be able to use
> standard Z-rated tires on my bike, which should run about 175 mph once I
> get it sorted out. But I'm wondering what guys like Rick are doing when
> they run in the low 200's? You can bump a V-rated tire up 50 mph by shaving
> it, but not Z-rated tires.
>
> The rule book also mentions road race branded tires. I just assumed they
> were talking about racing slicks, but would it also include some dot-tires
> that are designed for street racing classes?
>
> Also, what if you're running Z-rated tires and manage to get into the low
> 200's. Are you automatically disqualified for not having properly rated
> tires, or is there some leaway in the interpretation of this rule?
>
> Oh yeah, have a great holiday everyone! Just got back from a nice walk in
> the neighborhood here in hazy but sunny low-60's San Francisco.
>
> Henry Deaton
>
> At 05:00 AM 12/22/00, Crim wrote:
> >Jonathan wrote:
> >
> >What size of tire is it, I find it very hard to beleive there is no z
> >rated tire for it.
> ><SNIP>
> >
> >A Sportster uses a 130/90/16 on the rear and a 100/90/19 on the front.
> >There is a bit of room to go wider, but only to a 140 or with some
> >work a 150 on the rear. I can only find 160s. On the front I have
> >yet to find a Z rated 19" tire.
> >
> >Remember we're dealing with Harley Davidsons here. Certainly not
> >known for their blinding speed!
> >
> >George Crim
> >Sportster List Race Team
> >http://www.sportster.org/LSR
> >
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