I just put on a set of 285/65/18 Toyo Open Country A/T's on a 9 in wide wheel last night. What kind of air pressure ranges are people running in this size tire? I have a 2006 LLY Crew Cab Short Bed that I spend about 85% of the time driving unloaded.

42 right now. I've been trying all different pressures. My truck has rode like poop every since I dumped the 20's for 18's. I don't know how low to go for safety on these big ol' trucks. I've been up to 65. Pack your lunch for that ride. This has all been unloaded btw.

I run about 50 in the back and 55 up front on mine. Tires ride nice and worn good this way.

C-ya

42 right now. I've been trying all different pressures. My truck has rode like poop every since I dumped the 20's for 18's. I don't know how low to go for safety on these big ol' trucks. I've been up to 65. Pack your lunch for that ride. This has all been unloaded btw.
whyd you trade 20's for 18's?

i run 55 front and 40 back unloaded

A friend of mine had been running 80psi in the front and rear. Definetly too much! The truck was very darty and felt like I was riding on knife edges. I went down to 70psi and that felt much better. I need to try lower like you guys are saying. Maybe 65 or 60 in the front and 55 or 50 in the rear.