I've had a vibration on my C43 and although the tires have less than 1K miles on them when I had them balanced originally it was not using the road-force balancer and was done at a local service station I use from time to time. I had all 4 wheels checked today on at a local place which has the Hunter road force balancer and they found one of my tires was way out of spec and could not be brought into spec. It was a rear and while the rebalance of them eliminated about 90% of the vibration I suspect that last 10% would be gone if I replace the bad rear tire. Unfortunately, I was informed that the tires (Sumitomo HTR-Z) are now discontinued but TireRack is trying to locate a replacement for me to swap it out. Even if I have to live with it now I can say it is 90% better and would not waste time and money using anything other than a road force machine again and I would say anyone fighting annoying vibration issues should locate one and have your tires checked on it first, even if a standard "balancer" said they were OK.

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz