So far my RF is working for me. My new 23 F250 vibrated like crazy @ 58 MPH, right off the lot.
Dealer got the fronts better, but still vibrated noticeably. They would not go
any further, as Ford sets the RF limits higher than General (owned by Continental now) says they are
(they claim 30, but even then they said, "you still might feel it")
Forget RF for a second, was kind of surprised one of the rear tires was even used at the factory.
Yes, it is a 32ish" LT, but it had a ton of weight on it for a tire that size, with a very mundane AS tread
(been balancing for over 20 years on my own machine). Almost 9 ounces of weight and calling for
another ounce.
Figured I just do it myself, as dealer was about an hour away, and over a Pa bridge, so tolls applied
every trip.
I bought one new tire myself (don't mind having a 6th, in case of getting screw/nail locally, I can just swap out a tire
quick, and maybe fix the other one later). So far I have managed to get the two fronts to 7 and 11 (which
supposedly is really good for a 275 LT tire, I'm a relative RF newb). The worst two, were 52 and 56, and I am going
to try to warantee them out locally.
Anyway, SOP vibration is much better, so I'm a believer so far. These were the best two I could get so far.
I can tell you why no one does it though, it's a ton of work (at least without the latest type, fully auto tire machine).
Supposedly the new Elite measures rim runout with tire on. Not sure how they do outer bead surface correctly, since most
wheels are not machined there anymore.