heh,... that's a trip in the Way-Back Machine!
i once got over 10K miles on a set of A008Rs (or possibly A008RTUs),
but it was because i had to make several thousand-mile-weekend trips
downstate and back on them. actually seemed to me that they had gotten
less grippy as they had gotten fairly baked, but it was hard to tell
exactly because i was autocrossing the 'slush' series on them and
several of those events were in the slop.
cheers!
e
E M wrote:
I used to run Yoko 008Rs years ago on my old 911. While DOT legal for road
use, there was no wear rating on them. If you got 5000 out of a set, you
were doing really well, and they didn't like to be cycled a lot, so while
the grip was fantastic, it would drop off with cycles. The sidewall was so
upright and ridged, they probably inspired run flat tires. lol Nothing
comes without a cost, and while they would hang on forever, when they did
finally decide to let go, there wasn't a lot of progression built into
them. Wooooohooooo, did you feel that coming Molly??? ;-) hee hee
Ed
300E
2009/2/8 Tom Hargrave <tharg...@hiwaay.net>
You are probably right. A friend of mine bought one of the high performance
5 series BMWs a few years ago and his tires only lasted 9000 miles. But the
issue wasn't the speed rating, it was the rubber compound. The tires on his
BMW were Z rated!
When he went back to the Stealership for new tires, they would only mount
the originals and they explained that the replacements also had no mileage
rating.
I don't remember what brand he went to but he found an American Z rated
tire
that lasted 30,000 miles. The replacements also did not come with a mileage
warranty.
I have to admit - it is a very tight car, but the sidewalls on a Z rated
tire have almost no give.
Thanks,
Tom Hargrave
www.kegkits.com
256-656-1924
-----Original Message-----
From: mercedes-boun...@okiebenz.com [mailto:mercedes-boun...@okiebenz.com]
On Behalf Of E M
Sent: Sunday, February 08, 2009 9:17 PM
To: Mercedes Discussion List
Subject: Re: [MBZ] speed ratings of tires
>From what I've read about the tires originally intended for use on the
W140,
they were much softer and of higher performance. Due to the weight and
size
of the car, they wore very fast, and the US market just wouldn't got for an
expensive tire that had to be replaced every 10,000 miles or so. The tires
were "toughened up" for extended mileage, and the cars top end was reduced
to compensate for the lower performance rubber.
Ed
300E
2009/2/8 Tom Savage <tesav...@gmail.com>
Tom Hargrave wrote:
Kaleb,
"Speed rating" is about a lot more then speed. Speed rating also affects
how
the tires handle. H rated tires have much stiffer sidewalls than S rated
tires and since the tires are an active part of a car's suspension,
downgrading from H to S rating, particularly the front tires, will have
a
negative impact on how the car handles. Downgrading also greatly reduces
front tire tread life because the more flexible sidewalls allow more
tread
to be scuffed off in turns.
What he said. A 140 is a pretty hefty car and flimsy tires do it no
favors
at all. I just put Bridgestone Turanzas on my S420 and they're about the
perfect tire for the car. Much nicer than the Michelins they replaced,
or
the Contis or no-name POS tires on other 140s I've driven.
Expensive, but they have a 70k mile treadlife warranty which I expect to
collect on (these cars chew up tires pretty quickly), as long as I go
back
to Firestone every 6,000 miles so they can rotate them and steal my metal
valve stem caps (again).
Tom
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