:banghead: well it's a 2001 2500 cummins with a 2" spring lift in the front otherwise stock. After 50,000. miles my Dueler AT's needed replaced. I bought some used rims and powder coated. well they offset out about 3-4" per side compared to oem rims. tires are a 285/70/16. I installed new tires on the diff. rims and had aligned. I can't even keep truck going down highway at 60 with out about crossing center line. it is all over the road. Is all this because of the wider offset? If i have to go back to original rims I will. The truck is not driveable like this, I look like a drunk going down the road, it will randomly go either left or right 2-3 feet. It droove like this after I 2 # lifted it, then aligned fixed. I can't believe they can't align to drive correct. any help much appriciated.

I wonder if the tire pressure has been tried. My thought is that if the tires are distorting, you might only be getting a small contact patch. Since there's no cost, I think it's worth trying to optomize your suspension.

I feel stupid to even type this but I took a road trip today and the whole time I was thinking damn my truck is riding like a dump truck. I stopped after 70 miles checked tire psi only to find they were at 90 psi. I reduced psi to 50 psi and truck drives and rides like a champ. What the hell have tire companies come to is all I can think and yes I should of checked the psi myself. I have been checking wheel lug nut torque because of the different rims never dreamed of over inflated tires. Just glad it's resolved.

Rock auto has good prices on suspension parts.

I feel stupid to even type this but I took a road trip today and the whole time I was thinking damn my truck is riding like a dump truck. I stopped after 70 miles checked tire psi only to find they were at 90 psi. I reduced psi to 50 psi and truck drives and rides like a champ. What the hell have tire companies come to is all I can think and yes I should of checked the psi myself. I have been checking wheel lug nut torque because of the different rims never dreamed of over inflated tires. Just glad it's resolved.

Here is a formula on tire pressure. You need axle weight and itre information from the side wall. ((Axle Weight / 2) / Tire Weight capacity) x Tire Pressure Capacity = Inflation pressure My front axle weight is 4,440# Typical Load range E's 3,042# at 80 PSI ((4,440 / 2) = 2,220 / 3,042 ) = 0.72 x 80 = 58 PSI (Round up to 60) That simple. So doing the math on 4,440 and 2,860 for front and rear I typically inflate to 60 front and 40 in the rear. Hauling trailers its 60 front and 60 in the rear.