LT tire Psi

[Keepontrukin]

I have a 19 Classic. Crew 2wd 5.7. Just switched the rear17 inch P metric tires for LT and while towing my 5000-6000 pound trailer it was about as loose as can be on the highway. Any bump had me going sideways. The pressure was at 50. The tires say 80 max. Should they be higher? The original tires I had was around 44 and they handled well.

 

[Trucker J]

Tires are the first part of your suspension. LT, Light Truck, tires are designed for stiffer sidewalls thus giving the ability to handle more weight unlike P, Passenger, rated tires. I have LT tires and run 55 psi in the front and 45 psi in the rear. I increase when I haul or tow more weight.

 

[rzr6-4]

Higher PSI will make them even more bouncy and ride rougher. I'd go down to 43-45 and reassess.

 

[Keepontrukin]

i get what yall are saying but i would figure more pressure would help some since they are built for it

 

[rzr6-4]

i get what yall are saying but i would figure more pressure would help some since they are built for it

Pretty sure mine have a max of 80 PSI. Cold and unloaded I'm at 38 PSI, which is probly close to 40 when warm, and to pull the stock trailer I bump them up to 45ish if I have the time beforehand. Being "built for" 80 psi means they won't blow up, that doesn't mean that you are actually supposed to put that much in them.

My old tires were larger (larger tires run lower psi), I ran them at 30-33. My new ones are a different size so I started at 45, rode terrible so dropped to 42, still bad so now I'm at 38. I may try 36 in the future but you just have to know what it should feel like and what you need to do to get there.

 

[Daw14]

Rear control arm bushings are very mushy from the factory.
There are lots of aftermarket that improve the ride
.
I went with Clayton /Thuren, these are
Like night and day ,compared to stock.

They are not listed for Rams ,but Gladiator parts are the correct size. And fit spot on, heavy as could be.

 

[rotwiler]

I have a 21 Bighorn 4x4 5.7 qc. 285/60/20 LT and I keep them at 37. When towing my 7k trailer they are perfect, when hot they go up to 40-41.

 

[Bigskyroadglide]

My recommendation, the chalk test. Buy or obtain some chalk for your tires, mark the tread see what stays or comes off, adjust your pressure accordingly. I didn't believe it, till I tried. Amazing common sense . Less that 5 minute vudeo

CHALK this OUT | Chalk Test for Finding Your Correct Tire Pressure

In this video we learn about using chalk to find the correct tire pressure once you go away from factory tires.support the channel : patreon.com/timthetrailman

youtu.be

 

[CanuckRam1313]

For my summer set up I run LT295/65R20's in Range E on my stock Warlock 20x9 rims and adjust the tires to 40psi cold checked.

This is my daily drive psi for these tires and it provides perfect full tread contact with zero abnormal wear and a comfortable ride at all times.

 

[viviane7]

Yes 50 is too low for LT when you tow, I would rather put around 70-80 psi in the back. Personally, I saw a big difference in stability once the tires were inflated close to max.

Tutuapp​