I've done all the suspension mods to my Ex that you are recommended for this vehicle. The truck tows very well considering that it's a bumper pull rig towing a decent amount of weight. Now I'm trying to "dial it in", so to speak. If there's a weak link, I believe it's in my wheel/tire combo. Currently, I'm running BFG AT T/A KOs 285 75/16 (E load range) on the stock wheels. Stock wheels are 7" wide and an 8" wheel is recommended for my BFGs. Even airing the rears to 80psi, I'm getting too much side wall flex which I believe isn't helping the truck's stability. I'm looking at two options...there could be more. The first is to simply purchase 8" wheels. That wheel, or maybe even a wider wheel, should eliminate the sidewall flex. The second option is to go with a Rickson wheel/tire combo. I'd go with the 245 70/19.5 in order to maintain the same tire diameter/height. I think the advantage to the Rickson option is that I know I'll be getting a tire that will have very little sidewall flex. The downside is that I'm giving up tread width. The Rickson tire will be 9.6" wide and the BFG 285 is 11.3" wide. My understanding is that the Ex likes to have more rubber on the road to be stable. Any ideas?
Hmm, I only towed 7,000 with my 315 AT's on 8" wide wheels and never had any problems. Do you know anybody with 8" wide wheels/tires you could borrow for the day and go for a quick tow?
Part of what you are fighting is the sidewall height. There is a lot of side wall between the tread and the wheel. By running a larger dia. wheel and keeping the same sized tire would help. LT.
You should have 8'' wheels for sure, but I think that your trailer may be too heavy for your tow vehicle. What is your hitch weight? How long have you been towing this trailer?
swayin While I pull with a F-350 , I use same size tire wheel combo . I roll on Goodyear pro grade silent armor tires ( E rated 3700# @ 80 psi ) when towing and have a second set of wheels that have M/T tires for when I'm in the dirt. I found after years of driving over the road truck that a open tread tire tends to move under loads as compared to a rib tire . A rib tire will hold the truck trailer in line better even on roads with a crown . You might try just two rear tires that are a closed rib with a load before you buy 4 . And I agree with earlier post the taller the sidewall the more leverage the load can put on your rig . I think your trailer weight is ok for your rig, my wife tows heavier with her suburban and your Ex is a better tow rig .
