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psi - what do you prefer?

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psi - what do you prefer?

Post  jku87 on 6/9/2015, 8:57 pm

Just curious as to what you guys air down to when you hit the trails. I'm running 33" pizza cutters and was thinking that 20 psi should be sufficient? Thanks in advance.

Corey
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Re: psi - what do you prefer?

Post  AquilesT on 6/9/2015, 9:15 pm

35" and normally air down to about 15
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Re: psi - what do you prefer?

Post  dongalonga on 6/9/2015, 10:34 pm

Depends where you're wheeling. Most trails don't necessitate airing down. Some do and some do more than others.
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Re: psi - what do you prefer?

Post  Posimoto on 6/10/2015, 9:11 am

10 front, 8 rear
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Re: psi - what do you prefer?

Post  Tonellin on 6/10/2015, 9:49 am

8 to 10 psi - not only is the traction amazingly better the lower you go but the ride is way softer. Also depends on what tire you're running. Some lower ply tires will flex nicely without needing to drop very far. Generally anything above 15 psi doesn't do much since it only takes 12-15 psi to get a full contact patch for the streets

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Re: psi - what do you prefer?

Post  Ryan McKee on 6/10/2015, 5:33 pm

MTR/Ks - easy/moderate trail, 18-20 psi ... difficult trail, 10-12 psi.

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Re: psi - what do you prefer?

Post  janesy on 6/10/2015, 8:52 pm

Tonellin wrote:8 to 10 psi - not only is the traction amazingly better the lower you go but the ride is way softer.

This. I will never wheel anywhere with pressure over say 12. Rattle your teeth out, feeling every little pebble. Have my auto deflators set for 9. Hell, I only air up to 24ish for the street.
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Re: psi - what do you prefer?

Post  desertzj on 6/14/2015, 9:28 am

janesy wrote:
Tonellin wrote:8 to 10 psi - not only is the traction amazingly better the lower you go but the ride is way softer.

This. I will never wheel anywhere with pressure over say 12. Rattle your teeth out, feeling every little pebble. Have my auto deflators set for 9. Hell, I only air up to 24ish for the street.

Same, Ill usually drop to 10-12 for trails, street I'm 24 front and 20ish rear
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Re: psi - what do you prefer?

Post  Rob Cote on 6/16/2015, 1:38 pm

It's really hard to say because there's no number that will work for everyone, or even for one person every time.

The biggest factors to consider are the tires you have and the rig you have. If you have a wide tire, you'll likely want a lower pressure than a skinny tire, everything else equal. If you have a light rig, you'll want a lower pressure than a heavy rig, everything else equal. If it's a technical, bouldery trail, you'll probably want a lower pressure than a smooth trail or the street.

For a TJ on 33x12.5 Duratracs, I have ~15-18 psi on the street (higher in the front than the back) and 5-10 psi on the trail (usually the same or a little lower in the front than the back). I let air out until the sidewall has a good amount of flat to it. I define "a good amount" by what feels right in the moment, based heavily on wind speed/direction and the time of high tide on that particular day. lol!
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