Tire Pressure

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smokedbystang

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Not sure if there is a tire pressure thread. It won't let me search on my phone.

I just got a set of 275/65r20 (34") Trail Grapplers. The shop put in 35psi. Just checking to see what everyone else runs in 33-35" mud or off road tires on the street. I just want to make sure they wear even. I plan to rotate them every 3k miles too. Thanks.
 

gmbohuntr

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I run 60 psi in my 35" M/T's...

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gmbohuntr

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I'd follow what the sidewall says...alot will depend on weight rating as well...

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DannyMK2

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I'd follow what the sidewall says...alot will depend on weight rating as well...

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thats actually what your not supposed to do.


Not sure if there is a tire pressure thread. It won't let me search on my phone.

I just got a set of 275/65r20 (34") Trail Grapplers. The shop put in 35psi. Just checking to see what everyone else runs in 33-35" mud or off road tires on the street. I just want to make sure they wear even. I plan to rotate them every 3k miles too. Thanks.

35 might be OK. im sure tire shop did that because thats what your truck calls for and its a good starting point. being that your now running e-rated tires, you may be better off with a few more lbs of pressure. i'd probably guess around 40psi. best way to check is to chalk test your tires. if you have even contact across the tread your fine.
 

BCA87

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I run 285/65/20 Terra Grappler G2's..Shop filled them to about 37 PSI and after chalk testing I settled at 42 PSI
 

gmbohuntr

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I don't know that I'd run e rated tires that low. A lot of stress on the sidewalls. If I go much below 55 psi my truck tracks like crap and the ride goes to hell. I've always been told, and always have, ran E rated close to recommended pressure. And have gotten excellent mileage out of them. Stock tires, follow the door placard.

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gmbohuntr

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I'm also a 2500, so there's a difference there as well...

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blackbeautyhemi

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I'm also a 2500, so there's a difference there as well...

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Yea 60 is okay in your case but a 1500 you're good at 35-40 to wear even. Put in higher then you'll be rounding the treads and wearing the middle out faster. These tires have strong sidewalls so you can run a lower tire pressure.
 

gmbohuntr

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Yeah, didn't realize he was talking about a half-ton til I saw his sig...

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bryan28

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For what it's worth Discount Tire set my pressure at 45 for my Nitto Terra Grappler G2s 35x12.5r20 E rated.
 

quietpeen

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I run whatever pressure it takes to give an even contact patch
 

Steveo8x8

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On my 1500 I did 42 front and 38 rear with my mud terrains. Sold the truck at 35k miles and still had about half tread left.
 

Steveo8x8

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I always bumped the rears up to 50 when towing my trailer
 
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