GS 1200 engine vibration! help

[Jacoslab]

My father in law has a vibration on his gs on about 140km/h, checked the brakes, wheel balance, rims all ok, anyone knows what it could be? Someone suggested that he shoul check the engine compression? Any other stuff that we can look at?

 

[Marnus]

 

[Jacoslab]

 

[Grolls]

 

[Manic]

 

[Buzzlightyear]

 

[Pieter Willering]

 

[Chrisl]

 

[Jacoslab]

 

[Chrisl]

 

[SuperDavexlv750r]

 

[Jacoslab]

 

[Manic]

 

[Marnus]

 

[Tjoek]

 

[Snafu]

 

[BlingKing]

 

[BiG DoM]