On Nov 16, 5:26*pm, jim beam > wrote:
> On 11/16/2011 05:38 AM, AD wrote:
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> > Parking here is extremely tight. Hence softroading is common if not
> > mandatory :-[
> > I got onto a packed dirt embankment lately and it looked like the rear
> > right was nearly off
> > the ground (A4 with sport suspenders has extremely beefy front and
> > rear sway bars and i think
> > that was a contributing factor to my one-wheel-in-the-air scenario).
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> > The Michelin X-Ice 2 are 195 65R15 and the front right tire was
> > severely squished,
> > as if it had 10psi (it actually is inflated to 32).
> > It seems that two diagonally opposed tires (FR& *RL) were severely
> > overloaded while FL was
> > carrying maybe 1/8th of the car weight. XI2 survived somehow with
> > about 3800lbs worth of
> > a car essentially resting on 2.5 tires; thusly I wonder
> > to what extent the passenger tires are overbuilt.
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> > Me thinks if I have 91 load rating that's 1356lbs and 3800/2.5 is
> > 1520lbs.
> > If one manages to get two tires in the air that's 1900lbs per tire -
> > waaaay over the 1356lbs rating.
> > A blowout is sure to follow or not?
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> > Now suppose I deflate to 25lbs before venturing into soft sands, load
> > capacity should drop lower yet, right?
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> > thanks
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> you're making a mountain out of a mole hill. *"load rating" for a tire
> is that which is safe when driven at 100+ mph, at maximum air pressure
> from sea level up to 10,000 ft+, when the outside temp is 120F. *and
> that's dynamic, not static,
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> you're static, you're not over-inflated, and you're not overheated. *i'd
> get back to calculating how many grains of sugar to put in your morning
> coffee before over-thinking stuff like this again.
>

this table
http://www.tirerack.com/tires/tirete...adj_Tspeed.jsp

shows ZERO change in Tire Load Capacity at the speeds above 100mph.
If you read my original post (you did that at least once, right, funny
guy?)
you would see that the discussion is for winter rubber
(which is typically rated Q for the hardcore and so on, usually ending
up somewhere in the
laidback winter T territory in case you haven't been paying attention)

but, then, there is always an opportunity for the next stand up
comedian wannabe to practice
his clown act on the wide fields of the usenet.

now lets try alt.autos.subaru now that the group haven't seen a tire
thread in a while