bfg's tyre ptressure

Submitted: Wednesday, Apr 29, 2009 at 22:01
ThreadID: 68375 Views:2686 Replies:4 FollowUps:1
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bfg 265*70*17, can anyone tell me what is the lowest pressure I can safely run these at ? off road that is
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Reply By: Member - Mark G Gulmarrad - Wednesday, Apr 29, 2009 at 22:09

Wednesday, Apr 29, 2009 at 22:09
sand or mud?
AnswerID: 362351

Reply By: Geoff (Newcastle, NSW) - Wednesday, Apr 29, 2009 at 22:10

Wednesday, Apr 29, 2009 at 22:10
If the excrement really hit the rotary cooling device I'd go as low as 5 psi.

I've had my Cooper ST's, stock Troopy SP Road Grippers, Goodyear Wranglers and a few nameless others this low if it meant getting out of trouble.


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AnswerID: 362352

Follow Up By: Member - Ingo57 (NSW) - Thursday, Apr 30, 2009 at 10:09

Thursday, Apr 30, 2009 at 10:09
I'd second Geoff here, We had to drop our BFG's to 5psi once to drive out of a deep sand bog but once we were out back up to 13psi.

Great tyres!!!!!!!
FollowupID: 630117

Reply By: Member - Duncs - Thursday, Apr 30, 2009 at 10:58

Thursday, Apr 30, 2009 at 10:58
I am wondering exactly what you mean by your question.

As others have said you can go as low as 5psi in an extreme case, I have been pretty close to that on a few occasions myself.

But if you are talking about general running that is way too low.

I employ a 25% rule when it comes to lowering tyre pressures.

Normal highway pressures are about 40psi fully loaded. When I leave the black top for a dirt road (this is a pretty broad classification) I drop by about 25%, i.e. to about 30psi. If I then move onto sand say something like the Simpson Desert I drop by a further 25% to about 22psi.

These are guidelines or starting points, I frequently adjust tyre pressures up or down from these points depending on the condition of the track, the load I am carrying and the speed I want to travel at.

Remember if you drop your tyre pressures you must lower your speed to suit. Ir you are down as low as 5psi you should not get out of first gear low range and you should increase tyre pressures to higher than 10psi as soon as possible.

AnswerID: 362420

Reply By: Member - Shane D (QLD) - Thursday, Apr 30, 2009 at 20:17

Thursday, Apr 30, 2009 at 20:17
If you EVER get asked by a tyre company official what the lowest pressure NEVER say less than 20 psi.
Especially if you are trying to make a claim.
I have ran my 235/85 16's (splits) at 15 psi continously on sand, but periodicly monitor temps, tubes and low tyre pressure makes the tyres get hot.

AnswerID: 362493

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