Safe pressure to let tyres down to
Submitted: Friday, Oct 10, 2003 at 20:08
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Zapper
Hi All
Just wondering if someone can tell me roughly what minimum pressure tyres can be let down to when driving in deep sand without risking damage to the tyres, or does it vary with different types of tyres??
Reply By: ross - Friday, Oct 10, 2003 at 21:17
Friday, Oct 10, 2003 at 21:17
I have tyres like that on my landcruiser which weighs 1850 kg and I wouldnt go under 15 psi normally.But if I was bogged on a tidal flat in an area with 5metre tides I would let them down to 5 psi or more if I had to.How far you let them down depends on the strength of the tyre wall .A light 4x4 with stiff sidewalls may require 10 psi minimum.It something you decide on based on experience and there are no hard and fast rules.
On long offroad trips,having tyres with a low inflation will cause them to over heat in the sand and cause the ply to separate.It may not be apparant till your back on the bituman at high speed.
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Reply By: Phil G - Sunday, Oct 12, 2003 at 10:45
Sunday, Oct 12, 2003 at 10:45
As others have mentioned, you can go very low, if you drive slowly and don't turn sharply. Main think is not to turn sharply or fast, otherwise you'll roll a tyre off a front rim. If you do roll off a tyre, we usually find that after cleaning out the sand, most tyres can be reinflated with a good pump, especially if only the outer bead has come off.
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