Ride height for 06 freightliner classic xl

I’ve been setting mine at 2 5/8” forever. I’ve tried a bit more, 2 3/4”because mines an 285”wb. Thought it might make a noticeable difference in the driveshaft angle. Not really. More likely to spin tires on uneven ground. A bit less is a softer but bouncier ride. Especially when loaded heavy. Better have new shocks to run it at 2 1/2”. 2 5/8” is perfect. Some say right side, some say left side. I’ve done both. They’re always a bit different. I split the difference. Then hook a Trailer. Check it again. Maybe even drive a bit, check it again. Once you get it right. Shoukd be good to go. 2 5/8” that’s my final answer. Lol. When it’s low it’ll have more gear growl at a slow roll (idle) going forward. Too high, it’ll growl more in reverse. Check the spring bushings, motor mounts, cab mounts.

 

Bad cab or motor mounts will change the clutch pedal height and freeplay also. Might even change from Hitting a big a bump. Be sure to check the linkage too. Make sure the little ball joints aren’t falling apart. The torque rods bushings. on cab and axles too.