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Air Pressure

Air Pressure

Postby AllenH [OP] » Mar 31 2011, 5:43am

My new truck came with a dealer installed lift kit and 35x12.5x18 Toyo Open Country m/t tires. It is a 2011 GMC Sierra 1500 4x4 reg cab sle. Can someone tell me how much air pressure i should run in these tires?
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Re: Air Pressure

Postby EKinMN » Mar 31 2011, 1:14pm

The max. pressure should be on the sidewall of the tire. But I would assume your normal pressure should be the same as OEM...around 35 PSI.
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Re: Air Pressure

Postby BIG E » Mar 31 2011, 1:19pm

In these cases, are the stickers inside the driver door changed out to reflect the optional equipment?
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Re: Air Pressure

Postby EKinMN » Mar 31 2011, 1:21pm

I highly doubt that.
But when dealers to mods, they are usually pretty mild, and do not stray much from OEM specs or requirements. DSO's cannot run the chance of voiding their own warranties.
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Re: Air Pressure

Postby StarsnBars » Mar 31 2011, 2:12pm

Hey Allen, sounds like you have a nice truck. Congrads. Your tires are rated 65 max psi. Toyo M/T has a pretty stiff sidewall so 38psi to 44 psi should be pretty good for all around driving. Bump up to 55 or 60 psi if your towing. Air down to 28 to 34 psi if your offroading. You have one of the best offroad tires out there. You can play with tire pressures and actually feel how your truck responds to different settings. My sweet spot on my Nitto Grapplers is 44psi front, 43 psi rear. Truck really feels in tune at these settings for me.
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Re: Air Pressure

Postby petrocanada » Apr 05 2011, 1:12am

I was wondering the same thing. I just got Dick Cepek mud country and was wondering two things.
How much PSI? I just set it to 35PSI
Why is my steering wheel shaking at 55MPH and above on the hiway?
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Re: Air Pressure

Postby EKinMN » Apr 05 2011, 5:02am

I have never had the wheel shake form an inflation issue. Likely a balance or alignment issue. I suppose it's possible the shaking is from air pressure, if one side is much lower than an other.
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Re: Air Pressure

Postby JCunningham » Apr 05 2011, 6:01am

picks of truck or it didnt happen ;)
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Re: Air Pressure

Postby petrocanada » Apr 05 2011, 1:50pm

So is 35PSI the way to go or is that not enough?
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Re: Air Pressure

Postby HartskiHartski is online! » Apr 05 2011, 2:14pm

Dealer installed lift big enough to fit 35s?? I wanna see pics!
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