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- #21
Actually, after thinking about this for a minute, the before and after ride height is not a valid comparison because I have new, much taller tires on it. My bad, I should have made that more clear. That was the point of the lift... to allow for taller tires to increase under axle ground clearance. I'm laid up with a sprained ankle right now, but when I get back on my feet, it would be good to put the old wheels/tires back on (they are all still mounted) and measure the ride height and maybe drive it around. The basic geometry of the driveline shouldn't change with different tires, but the new wheels/tires are 21.5 lbs heavier per corner than what was on it... perhaps that extra rotating mass is contributing to the vibrations. Plus the new tires are BFG KM2 mud terrain and the old tires are KO2 all terrain, so the tread is quite a bit chunkier. A drive on the old wheels/tires should help narrow this down.That seems way too high. Are you measuring all this down on the ground sitting on its own weight and not drooped out on jack stands? Are your springs the right way around? Stock length shackles?
I just did a 2" skyjacker lift and didn't need any shims, and actually removed the 2 degree shims I had been told I would need. Also the engine/trans/tcase is designed to have a tilt to it. 0.8 suggests you have a ton of rake (2.5" based on above) and something is off.