I had both my front and rear tires replaced recently and now at speeds above 70 MPH I get a pulsating vibration. I took it back to the shop had the front tire rebalanced and it was perfect. Had the neck bearings checked also good. Front brakes were replaced over the winter. Rears as well. I have tried getting up to 85 mph and pulling the clutch in to see if maybe it would stop and see if it might be a motor issue but it still vibrated to 65-70mph. The new tire are both Michelin pilots. Tire pressure has been varied I've run them at 36f 42r - 34 40 and no changes. So with that being said could it be coming from my rear area.(not my ass) almost for got the vibration isn't constant it takes anywhere from 1-2 seconds in duration. Vibrates then pauses for 1-2sec then vibrates again. I rode 500 miles on Memorial Day thinking it might be the tires needing worn in and no change so now I'm worried.
I have used the pilot before and have no issue. I have this happen only once and it due to the balancing. The OP put them on and swear they are good so I mark the location of the weight and bring the tire to another shop for balance. When I got the wheels back I noticed the weight have change and at different location I mount the wheels back and the vibration go away. All I can advise you is try another shop if everything are good as you said then you should have no problem unless the tires are defect which do happen. Good luck
