Minimum tyre pressure for split rims

Submitted: Sunday, Aug 24, 2003 at 09:43
ThreadID: 6784 Views:2271 Replies:6 FollowUps:2
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Forgive my ignorance, but what are the accepted minimum tyre pressures when you have split rims? I was out with two people on Saturday, both had split rims, and I couldn't advise them on what pressure they could go down to on the tracks. I suggested that anything above 20 would be OK, but wasn't sure. Your collective wisdom would be appreciated.Russell S
Prado RV6
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Reply By: Williewags- Sunday, Aug 24, 2003 at 11:25

Sunday, Aug 24, 2003 at 11:25
Hi Russell,

I run splits and would not drop them below 15 psi(unless I am in real trouble) as one runs the risk of running them off the rims. It depends what load you are carrying. I regularly run at 15psi in sandy country. On the Canning I ran 15psi only a couple of times and mainly 20psi as some of the dunes were quite hard packed. Down along the beach south of Robe 15 psi was best. At low pressures you have to keep your speed down as well.
Cheers,
Willie
Never a dull moment
AnswerID: 28888

Reply By: Steve from Drive Systems Victoria - Sunday, Aug 24, 2003 at 13:29

Sunday, Aug 24, 2003 at 13:29
Yes, I concur with the above reply, 15 to 16 would be the absolute minimum for heavy mud and or maximum foorprint for gnarly hills. Around 24-25 for general track/bush work. Of course, the big pain in the arse is the tubes, which are the weal link in the chain. At lower pressures they rub inside the tyre and will let you down, even when pressures are restored to road pressure back on the tar. Viva, a la tubeless!!
AnswerID: 28897

Reply By: Member - Peter [SA] - Sunday, Aug 24, 2003 at 18:30

Sunday, Aug 24, 2003 at 18:30
I have dropped mine as low as 10 psi, but only to get up Big Red fully loaded, only going in a straight line. But increased pressures once I was over.
AnswerID: 28929

Reply By: ToyMotor - Sunday, Aug 24, 2003 at 20:24

Sunday, Aug 24, 2003 at 20:24
I normally use 20 on sand, 15 for shell-grit beaches is the lowest I've had to go with my splits. For the same conditions with the 10R15s on my old 60 series, I've gone as low as 6 psi on the shell-grit! (Using the same gauge, in case anyone's wondering)

Cheers
AnswerID: 28951

Follow Up By: Steve - Sunday, Aug 24, 2003 at 21:15

Sunday, Aug 24, 2003 at 21:15
Were the 10R 15's on the old 60 series on splits ? And which unit did you get down to 6 psi ?
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FollowupID: 20173

Follow Up By: ToyMotor - Sunday, Aug 24, 2003 at 21:23

Sunday, Aug 24, 2003 at 21:23
Were the 10R 15's on the old 60 series on splits ?

No, Sunraysia rims, tubeless (well 3 out of 4) Bridgestone Desert Duellers.

And which unit did you get down to 6 psi ?

As I said, the 10R15s on my 60 series.

Cheers
0
FollowupID: 20174

Reply By: Member - Russell - Tuesday, Aug 26, 2003 at 08:15

Tuesday, Aug 26, 2003 at 08:15
Thanks for the replies. Confirms the thoughts I had - will pass on to my split rim mates.Russell S
Prado RV6
AnswerID: 29156

Reply By: Jol from Direct Four WD Awareness - Saturday, Aug 30, 2003 at 22:02

Saturday, Aug 30, 2003 at 22:02
10psi when your in trouble 15 - 18psi over a long period the tube rugs against the tyre and you get rubber dust in the tyre can cause flat tyres if you drive for a long way like that. put some baby powder in ther help slip.
tubeless much more flexable
cheers

jol fleming
AnswerID: 29666

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