Let me tell you what I have. 4 1/2 in lift, SYE. Up front, detroit and alloys. The rear is open but with disk brakes. 33 x 10.5 KM2 with 13k on them rotated and balanced every 3k and with no cupping or uneven wear.
When I get up to about 50 MPH - 55 MPH, I get a distinct driveline vibe. It does not change under power or deceleration, my shims on the springs look fine and it is only at that speed. I pulled both drive shafts and both look great. I pulled the front and rear diffs to inspect and everything looks fine. I check all the yokes while the driveshafts were off and everything seems tight. I drove with only front and only rear drive shafts including swapping front and rear shafts from original set up and it did not change anything.
Could it be that the KM2 are causing the vibes? I messed with air pressure, reduced to 22 psi and pumped them up to 45 psi with no change.
My FIL has all terrains that I could put on to see but I just wanted to see if anyone else has had this problem.
Thanks
T
When I get up to about 50 MPH - 55 MPH, I get a distinct driveline vibe. It does not change under power or deceleration, my shims on the springs look fine and it is only at that speed. I pulled both drive shafts and both look great. I pulled the front and rear diffs to inspect and everything looks fine. I check all the yokes while the driveshafts were off and everything seems tight. I drove with only front and only rear drive shafts including swapping front and rear shafts from original set up and it did not change anything.
Could it be that the KM2 are causing the vibes? I messed with air pressure, reduced to 22 psi and pumped them up to 45 psi with no change.
My FIL has all terrains that I could put on to see but I just wanted to see if anyone else has had this problem.
Thanks
T
