HI

I have a 2007 octavia mkii 1.9 tdi pd .(105 bhp) rhd

THE car starts a slight vibration past 60 mph and i have noticed that the vibration is only present at the 5th gear and above 60 MPH

I have also noticed that the vibration dissapears after 80 mph and is not present at any speeds in the 4th gear !!!!!

the vibration is not severe but a slight one like it is having a bubble on one of its tyres !!

what would be the exact issue

cheers

targus 999

First step would be to get the front tyres' walls checked for any bulges, both outside & inside edges. If all good, then get the wheel balance checked.

is it anything related to flywheel because i changed the flywheel including the clutch recently