Just so I am clear what I meant by "vibration", the bike that I rode had a lot of vibration through the handle bars, seat and tank on the down shifts and speeds over 80mph. Bike vibration is something I've come to terms with after owning a number of 75 degree V KTM's and a 90 degree V Ducati Monster 1200R, so whilst I'm no expert, I can recognise it.
The test bike I rode last Sunday had excessive vibration, mechanical vibration, through the bars mainly. I had nothing to compare it to as its the first 1250 I have ridden, and the dealer who agreed with me re the vibration had no other 1250GS to compare the bike too. I'm going to try the bike again this coming weekend, and I'm also going to try another dealers test bike so I at least have something to compare.
I'm not being critical, its a stunning bike, and I've owned 5 GS bikes over the past 4 years. I was just surprised with the amount of vibration I was feeling. it made my 1290 GT feel like a V8