that seems to not take the tread design into account or the load on the
tire.. makes no sense to me but what do i know?? Think slick vs. snow tire
at the same size and inflation pressure???? 1500 lb car vs. F350 truck??
Dave
> -----Original Message-----
> From: owner-land-speed@autox.team.net
> [mailto:owner-land-speed@autox.team.net]On Behalf Of Joe & Lynne Lance
> Sent: Saturday, February 05, 2005 12:03 PM
> To: DrMayf; land-speed@autox.team.net
> Subject: Re: Non LSR Truck Tires
>
>
> My 1998 Grand Cherokee Limited 5.9L is not a heavy duty truck, but a few
> years ago I replaced the original 225/70SR16s with Pirelli 255/55VR16
> Scorpio Zero sport truck tires because I liked the lower, wider look. Big
> mistake!---Not only did the Pirellis wear out very fast, I lost a
> great deal
> of directional stability at all speeds probably due to the wider tire (
> regardless of inflation pressure and four wheel alignment was checked
> repeatedly). Since then went back to original size in 225/70SR16 Michelin
> Cross Terrain SUV tires. The Michelin were probably the most
> expensive tires
> in that size range from Tire Rack but I'm well satisfied---they have
> excellent traction in rain and snow, wear like iron, and got all of the
> original directional stability back and more. Been a fan of
> Michelins since
> 1963 when I replaced the original equipment bias-plys on my Corvette with
> Michelin radials--fantastic improvement in handling and traction (rain and
> snow) and they lasted more than six months.
>
> Read an excellent technical paper a few years back (can't remember the
> reference) on automotive and aircraft tires---said series 70 tires start
> hydroplaning at a MPH = 9.8 times square root of the inflation pressure.
> Wider tires start hydroplaning at lower speeds.
>
> Lance
>
>
> ----- Original Message -----
> From: "DrMayf" <drmayf@teknett.com>
> To: <land-speed@autox.team.net>
> Sent: Friday, February 04, 2005 8:06 PM
> Subject: Non LSR Truck Tires
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