What psi do you run your tires at. The dealer put 40 psi in the tires and it has a lot of bulge where the tire meets the ground. I put them up to 44 psi but it seems like the tire tread is no longer flat. what would you all say the best psi to run these at?

not sure if this matters but they are E rated tires up to 80 PSI

thanks,

Q.

 

I run my D's at 60PSI, find I get better wear plus better MPGs. Chris

 

What size tire do you have?I run 35psi in my 265/70/17.The tread is not flat,but almost.

 

275/70R18

truck decal recommends 35 psi, but seems like a lot of squish at 40 psi, let alone 35.

 

The decal on Wendy's Suburban states 35PSI but when the dealership reduces PSI to factory specs, she gets 13MPG vs me running them up to 50PSI and then she gets 15MPG. The same is true with my F-150. I get better MPGs at higher PSIs. Maybe less tread on the road means better MPGs plus I was listening to a auto tech on the radio the other day, he stated for snow it is better to run at an higher PSI as you will cut thru the snow better. He did say for sandy conditions you would want to lower your PSI for a wide traction, makes sense. Chris

 

sounds legit to me. i'll just play around with them for a while and see what works best.

 

More pressure means less resistance.It will help your milage,just might ride a little ruff.As long as they wear good run them how you want to.You will love the tires.

 

For me I run 40'psi I played around with 35 to 50 psi

Which we pretty much have the same truck other than color 4.6 2 v stx

Also I'm at about 8500'miles and little no tread wear

 

awesome, i knew there was someone out there with the same tires and truck. I think you were the one who made up my mind on the size without having any issues.

Thanks,

Q.