Tire Preasure Help

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TLB
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Tire Preasure Help

Post by TLB » Fri Mar 17, 2006 11:18 am

I'm thinking to take my Avalanche 2500 out to the dunes this summer, what do you think I should run for tire preasure?

My tire size is LT295 75 16
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Post by LoBuck » Fri Mar 17, 2006 12:28 pm

I've posted this on here a couple of times before. A very good article that provides some detailed info.

Tire Pressures for 4-Wheeling
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Post by scott-the-viking » Fri Mar 17, 2006 4:23 pm

Good article....you know what someone should add to that, a little warning about how a 16.5 tire & wheel combination and low pressure are not a great mix. Not a ton of people still run the old 16.5's these days, but those who do (my tow rig) will want to be carful when airing down. A 16.5 with too low of pressure will come off the bead if you slam the car door too hard getting in. You CAN let a 16.5 down, but you really have to be cautious about your driving.
AND Baba Booey to you all.

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Post by TLB » Fri Mar 17, 2006 9:23 pm

Thank's for the link
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Post by quad1100 » Sun Mar 19, 2006 10:15 am

I use to run my jeep tires at 15 lbs and could go anywhere I wanted. I think there was one time I had to go down to 10lbs, but I don't feel safe being that low.

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Post by Maderita » Mon Mar 27, 2006 12:11 am

Around 10 - 12 psi.
You can air down to 7 or 8 psi if you get stuck, but I wouldn't go that low for hard dune driving as you could pop a tire off the bead. That becomes a pain to fix in the field, even if you have the know- how.
Also, if the sand is very damp or wet, don't go below 12 psi. Sliding sideways on firm sand will peel the tire off the bead.

Unless you have a strong support crew & other vehicles, I might suggest this strategy: Air down to 12 psi and learn your vehicle's limitations at that pressure. Then when you get it stuck, you have room to air down further for getting back to firm ground.

Have plenty of tools and support. You've got a heavy vehicle which is likely to get stuck. Snatch straps (20,000+ lb.), shovel, High-Lift jack, plywood, chain or axle straps, 3/4" shackle, 12v air compressor, etc.
That's my $.02 Have fun.

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Post by CrstyDmn » Mon Mar 27, 2006 10:55 am

I'll do no less than @ 18lbs.
Heavy truck = 2500HD CC.

It all depends on what your driving...and how your driving.
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Post by TurboLark » Wed Mar 29, 2006 8:26 am

scott-the-viking wrote:Good article....you know what someone should add to that, a little warning about how a 16.5 tire & wheel combination and low pressure are not a great mix. Not a ton of people still run the old 16.5's these days, but those who do (my tow rig) will want to be carful when airing down. A 16.5 with too low of pressure will come off the bead if you slam the car door too hard getting in. You CAN let a 16.5 down, but you really have to be cautious about your driving.
I use 16.5's on my rockcrawler. Air down to 12lbs and no problems, air down to 10lbs and I occasionally will pop a bead on the tire that is on the downhill while turning sharp.
Phil

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Post by TLB » Wed Mar 29, 2006 11:00 am

S_ANDerson72 wrote:I'll do no less than @ 18lbs.
Heavy truck = 2500HD CC.

It all depends on what your driving...and how your driving.
you got it about a heavy truck
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