Stock 275/55/20 PSI question

[6Sixathome]

I just got a set of OEM 20's (275/55/20) for my 13' Suburban. What PSI should I run in them? I'm taking off the stock 17's and the PSI for those was 30. Thanks.

 

Dave

[Brendan Cosworth]

It should say on the door jam what the suspension was designed to. PSI shouldn't matter based on tire size.

[GLSierra13]

I have 275/55r20's on my '13. Door sticker says 30 psi. First (free) oil change, dealer told me to run 36-38 because they've seen the tire shoulders wear prematurely at 30 psi. I run 38 psi in mine and I'm getting nice, even tire wear.

[6Sixathome]

I put 30 in them (once they warmed up the psi was like 34 and had a really nice ride to them, better than the stock 17's). I'll put 36 in them tomorrow. Thanks.

[Brendan Cosworth]

I have 275/55r20's on my '13. Door sticker says 30 psi. First (free) oil change, dealer told me to run 36-38 because they've seen the tire shoulders wear prematurely at 30 psi. I run 38 psi in mine and I'm getting nice, even tire wear.

That is good to know. Strange that would happen, pretty important for suspension tuning and all that to get the psi right. If you have different psi it can change suspension feel due to the rebound rates were designed at a certain PSI.

 

Sounds like a summer student maybe helpes on the sticker design? Haha