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Re: Tire load

> > > > > > > > > > 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). > > > 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& =A0RL) 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. > > > 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? > > > Now suppose I deflate to 25lbs before venturing into soft sands, load > > capacity should drop lower yet, right? > > > thanks > > you're making a mountain out of a mole hill. =A0"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. =A0and > that's dynamic, not static, > > you're static, you're not over-inflated, and you're not overheated. =A0i'= 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

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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 :)

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I certainly can't speak to a lot about tires, and even less about winter driving, but you can find multiple pictures of vehicles on the track or autoX-ing that are making a turn and have one, maybe both, inside tires in the air. For those few milliseconds, all the vectored forces are on 2 tires - and those forces are 'almost' rolling the tire off the rim!

Most engineers derate their designs. And for tires, they have to consider what forces it could survive under the worst circumstances -

7 years old, worn to the wear bars and improperly inflated in -40 OR 115degreeF weather. What a new, properly inflated/maintained tire can SURVIVE is a lot different than 'recommended use'.
Reply to
1 Lucky Texan

if this guy can read an article from tire rack, which is aimed pretty danged low, and still fail to understand, then i think we're wasting our time.

Reply to
jim beam

I think I know the type: the one who tries to shuffle incompetence under the mask condescending remarks. Any other houses of cards you want to show me? Lets discuss the likelyhood of honda offering a Fit with a turbodiesel in the states hoping that VW marketing missed something. Do you still want to humor me?

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your post was just chicken little nonsense. either you knew that and are pissed that people aren't playing your little game. or you didn't but are having a problem with learning something new.

sure, go ahead and share what you think you know. but don't bother if you just want to speculate or rumor.

Reply to
jim beam

That's what I paid for my XI2 set in 2011. coming from subaru 5sp+awd I have serious doubts in torsen snow handling prowess and, thusly, decided to have tires with a known good "plowing through the snow" capability

though i must say handling of packed dirt on a hill incline (unpleasantly) surprised me: I was spinning wheels with no water (snow or ice) in sight. That's at around 40-45F

i'm not surprised audi is ditching torsen on 2012 A4: i guess its cheaper for them than to propagate active rear diff from S5 throughout the rest of the lineup. Sigh.

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AD
[some nonsense snipped]

I know (for a fact) that the majority of the americans does not buy diesels. thusly Introducing 'em (diesels) anywhere south of the premium segment is a suicidal act and you seem to have a problem with the ways of the universe on your side of the pond.

Your countrymen do not like tractors. there won't be a subcompact turbodiesel offered for sale this decade in the US, get used to it.

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