I'm getting the same vibration through the steering wheel at 52mph. Any
faster or slower clears everything up. I've been driving through lots
of road construction areas and have smacked a couple of nice sized pot
holes at speed.

Not a hint of anything wrong until after rotating the P235 BFG ATs
front to back. Noticed the shimmy shakes right off the bat. Haven't had
the time to have it checked out, so I'll be taking notes on any info
posted here.