Quote:
Originally Posted by hackish
However, overinflation also gives you a reduced contact patch. This means at speed you will not have as good a handling or braking - especially noticeable in poor conditions, rain, snow etc.
|
The first thing to do is define "overinflation".
Is it inflation over
1) the car manufacturer's pressure recommendations;
or
2) the tyre manufacturer's rated pressure.
1) is usually safe to do as car manufacturers often recommend pressures that are low to too low.
My own car will wear down the shoulders when
"correctly" inflated, and it'll wallow on its tyres.
Volvo increased the recommended pressure from 33.4psi early on, to 36.3 on their later, near-identical models.
One of the many areas of this car range where they were blatantly wrong.
On my car , the telltale signs of underinflation only went away at 43.5psi - and beyond.
2) Puts you in the safety margin that the tyre manufacturer built into the tyre.
I won't go there, though I do run my tyres at the max. rated pressure (51psi).
Quote:
|
Now if you over-inflate then get them hot, it will at some point become a safety issue.
|
Tyres blow due to too low pressure, not from higher pressure.
There's tons of people on here running well over the rated pressure - how come their tyres don't blow out ?
Increased pressure reduces deformation, which generates the heat and RR.
Quote:
|
My old man worked at Michelin for 25+ years.
|
Good tyres .
(well, mostly, as their Energy E3 a/b were dogs)
I always seem to return to Michelin after trying something else.
Looks like they're
working for me.
Quote:
|
I would never advise overinflating a 32psi tire to 80.
|
Nobody does.
If my post came across as such, it's not what I meant by it.
On a European van or light truck, depending on weight, manufacturers wuill often fit tyres that
are rated for 80 psi .
32psi on a light truck tyre seems ridiculous - unless it's an off-road tyre.
Motorcycle typically run 36psi !
I find it mind boggling that at these low pressures, even a meagre 3psi more would lead to noticeable center wear.