Join Date: Jul 2019
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vibration floor and seat
I am trying to narrow down a vibration felt in the floor and seat, 45 mph and up to 85+ in my 2016 ram 2500 4x4 6.7 crew cab, 3.42 ratio..81 K miles I've had issue before new tire tires and after. currently running factory 20 x 8 wheels with LT285/60r20 continental tires. Had road force balance at 2 different shops, replaced 1 RR wheel ($500 from dodge dealer)from road force balance results.Problem still persists.
I checked LR wheel and I have 42 thousandths side runout on wheel, I can see wheel/ tire out or round with rear jacked up running 45 mph. I also have 18 thousandths runout on axle hub, and 12 thousandths on face of axle flange. I don't know what tolerance factors are before runout is felt.
Question, is hub runout causing wheel runout? or do I have another bad made in china factory wheel.
I pulled rotor and found oil/grease leaking onto emergency brake shoes, which must be a bad seal, but didn't feel and up down movement on hub assembly bearing.
I have videos of all checks, not sure how/where to upload to.