lowest psi

[TuckerTravis]

What is the lowest psi I can run in my tires safely at highway speeds.

 

[MrGreen33]

FRF member CineSLR posted the below thread on tire pressure...its a great read!!
Good luck bro!!

http://www.fordraptorforum.com/f114/off-road-tire-pressure-article-12686/

 

[whtrapta]

Highway speeds? I ran 30psi for around 60 miles, its sucked, then ran 35ish another 350 miles, still sucked. The truck wonders and floats all over the road. I run 50psi normally.

 

[TuckerTravis]

Highway speeds? I ran 30psi for around 60 miles, its sucked, then ran 35ish another 350 miles, still sucked. The truck wonders and floats all over the road. I run 50psi normally.

I have 35 Toyo open countries on 20's and have 35psi in them now. 40 is roo rough. I was even wanting to go down to the 32-30 psi range. Mainly for highway. Didn't know how low would be unsafe. Or how low would cause a more rapid tread wear.

 

[DirtNasty]

What load rating are they? D or C?

 

[TuckerTravis]

What load rating are they? D or C?

They are a load rating E.

 

[Prybar]

Make a chalk line all the way across the tread of the tires in front and rear. Run the truck around the block. Check the chalk. Your pressure is right when the entire tread is on the ground and just starts to get less contact near the sidewalls. The pressure will be different front and rear. Any less pressure than this and you are creating unnecessary heat in the tires at highway speeds.

 

[Netix]

I had my 35 trail graps on 20 inch wheels running at 32 psi, it was perfect. Had on 45 before way to rough


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[whtrapta]

It's going to be different with 20s and different tires too