Shakes at 55mph
Truck is new to me, just noticed the shakes at 55mph. Don't feel it in the steering, don't feel it below 50mph, and it's not as rough over 65mph - most pronounced at 55mph.
Tires look good with proper wear and frame is in good shape. My guess was either alignment or wheel balance. Wheels are painted steel and getting rusty.
What do you think?