Date: Fri, 16 Apr 1999 23:31:54 -0400
Reply-To: Pat Dooley <pdooley@GTE.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Pat Dooley <pdooley@GTE.NET>
Subject: Re: Speed Rating EXPLAINED
In-Reply-To: <v02140b04b33d092f0f6c@[192.168.0.1]>
Content-Type: text/plain; charset="iso-8859-1"
Thank you Ari, I was hoping someone more motivated than myself would post
some details.
And, Paul, I live in Florida. On I-75 you will find drivers doing autobahn
speeds rather frequently, and some of these vehicles easily weigh two tons,
even more reason to get a good speed rated tire.
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
> Of Ari Ollikainen
> Sent: Friday, April 16, 1999 11:35 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Speed Rating EXPLAINED
>
>
> >Pat Dooley wrote:
> >> If your tires are "H" rated, it doesn't stand for highway.
> >> I see people driving 45-145 mph on the highway. Doesn't
> really narrow it
> >> down.
> >> "H" is a speed rating, as is Z,T and many others.
> >
> >Actually the H rating is something like 85 m.p.h. (hence my "highway").
> >I was gonna get the "Z" rated tires because I will probably travel at
> >sustained speeds over 120 m.p.h. in my two ton loaf, but only
> through school
> >zones and in town.
> >I would therefore assume "Z" is for zero because how many people drive at
> >sustained speeds over 120 m.p.h. anyways?
> >[You live somewhere where vehicles travel at 145 m.p.h. on the highway
> >routinely? Must be the fabled German Autobahn? Funny, the stoic
> Germans have
> >the greatest incidence of overtaking collision in the World; where death,
> >dismemberment and serious injury occur routinely. A little too
> much faith in
> >the flashing of their Bosch headlamps?]
>
> <gmph> Almost lost my mouthful of latte...
>
> It must be Friday since the misinformation is especially dense...
> OR you forgot to append an (F) or smiley to your post.
>
> Soooo...in an effort to cut through the fog of fuzziness, I give
> you the following factual explanation of the Speed Rating
> system as
> found at: http://www.internets.com/tirenets/glossary.htm
>
> SPEED RATING: A system designed to establish and label the high-speed
> capability of a tire based on a letter designation
> identifying the tire's high speed durability on an indoor
> test wheel. This is not the same as a speed rating for a
> vehicle. TireNets recommends Speed Ratings at or above the
> Original Equipment for your vehicle.
>
> Letter Speed
>
> Q 99 mph
> R 106 mph
> S 112 mph
> T 118 mph
> U 124 mph
> H 130 mph
> V 149 mph
> W 168 mph
> Y 186 mph
> Z greater than 186 mph
>
> For tires having a maximum speed capability above 149 MPH,
> a "Z" may
> appear in the size designation. For tires having a maximum speed
> capability above 186 MPH, a "Z" must appear in the size
> designation.
>
>
> OLTECO Ari Ollikainen
> P.O. BOX 3688 Networking Architecture and Technology
> Stanford, CA Ari@OLTECO.com
> 94309-3688 415.517.3519
>
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