Topic: Tyre Pressure calculator (Read 5753 times)

lefty · « **on:** April 21, 2006, 12:43:10 PM »

I'm sure I remember seeing a thread somewhere that explained how to calculate tyre pressures with vehicle weight, tyre size etc etc.

I've treid seraching for it but to no avail

Failing that, can anyone with 31x10.5 MT's on their XJ tell me what pressures they're using?

AdrianW · « **Reply #1 on:** April 21, 2006, 01:00:01 PM »

You need to know the weight of your Jeep loaded. Sidewall of the tyre will have a rating of Max Load =x at y psi

Divide x by the weight of your Jeep, then divide by 4 to get the loading on each tyre, then multiply by y to get correct psi.

Anonymous · « **Reply #2 on:** April 21, 2006, 01:01:10 PM »

stuff all that..... :wink:

AdrianW · « **Reply #3 on:** April 21, 2006, 01:01:56 PM »

So do I

lefty · « **Reply #4 on:** April 21, 2006, 01:02:52 PM »

i've got mine at about 32 at the moment and usually take em down to about 20 offroad... those were guesses though, based purely on how they looked to be deforming!

chrisjones · « **Reply #5 on:** April 21, 2006, 01:08:04 PM »

I run mine at 33psi.

Again, t'was a bit of a guestimate though.

Mike Pavelin · « **Reply #6 on:** April 21, 2006, 01:26:44 PM »

Used to run at 33 but found them a bit bumpy. 30 is about right.

Mort · « **Reply #7 on:** April 21, 2006, 01:32:23 PM »

Here's one of the many threads on JeepClub which gives the formula - http://http://www.jeepclub.co.uk/topic.cfm?ID=3083

Author Topic: Tyre Pressure calculator (Read 5753 times)

lefty

Tyre Pressure calculator

AdrianW

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Anonymous

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AdrianW

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lefty

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chrisjones

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Mike Pavelin

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Mort

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