got new 37s what is the best psi i have a 2dr

 

A lot will depend on the Service description which on the Toyo 37s will very with wheel size. The best way to get it figured out is with the chalk test, but with some extra details you can probably get a good starting point.

 

X2 on the chalk test... it's the only way to see true wear across the whole width of your tire at EVERY psi.

 

I run my 37 toyos at 26 pounds and they seem to be wearing fine and the ride is good as well.

 

It's important to note that there is a huge difference between the Toyo MT 37s dependent on whether they are on 17 or 18" wheels.

 

The .35 number is a little light for a JK considering the high center of gravity and the loads a short wheel base vehicle places on the corners. You also need to include payload capacity in the weight figure, 1,000lbs for cargo and occupants, not curb weight. From the factory the multiplier would be higher (near or above a .40 multiplier at the GVWR) and there may also be different multipliers based on the OEM tires and springs used. The best bet is to use your stock placard data and compare it to the ETRTO Charts for the Service Description of the OEM tire.

Additionally, inflation rates aren't necessarily linear and different tires are going to perform differently at different inflation pressures. I would strongly advise using the tire manufacturers worksheets or and ETRTO chart to determine what they believe the proper inflation rate to be. That doesn't mean you need to lock yourself into that inflation rate, but it is where the vehicle and tire manufacturer have determined to be safe. It also provides a good starting point to dial in ride comfort and handling. Then lastly, this is a good place to start your chalk test so you have given yourself a window of what will work best for you in the end.

 

Checked the tires and it is on 50PSI so I am going down to 28PSI

 

Nice! Gotta love it when they crank the pressure up like that.

 

Hey Taher, I got you beat. I just bought a set of 37" Toyo's. After airing down to around 15 psi for the first time to do some rock crawling I read on the tires that they can be aired up to 65 psi. So I aired up to 60. Man that was a hard ride. I aired down to 33 psi and the ride is much better on the street.

 

I run mine at 25psi. They have been wearing great