Should tyre pressures be set at sea level? Does the difference in air pressure at sea level or high altitude make any difference. The higher we go the thinner the air is so you have to put more in to get to the required pressure or doesn't it work like that.........Just wondering

The higher you go the less atmospheric pressure, therefore you need a lower tyre pressure.

This page will explain better:

http://www.ehow.com/facts_5776172_effect-altitude-tire-air-pressure.html

Edited 29 August, 201015 yr by Guest

Add to that ,it might be worthwhile now to fork out for one of those little electric pumps and a pressure gauge - locally I cannot find one of the old type check gauges .All that's around are the pay first .And at 50p a kick -a bit expensive .

This site provides clearer and more informative info.

My link

Assuming we're talking about UK, as the highest metalled road is only about 2,200 ft above sea level, who gives a stuff

This site provides clearer and more informative info.

My link

Interesting read So, roughly, 0.5 psi difference per 1,000 ft... or less than 2 % of recommended tyre pressure. Doubt that any pressure gauges at gas stations &c. are that accurate :p

who gives a stuff

Not me for sure - yesterday I checked tyre pressure for the first time since switching from winter tyres in March

30 psi in every tyre - give and take 5 %...

1st thing in the morning when its nice and cool works for me :yes: