First question here; go easy on me.
So I have an e30 BMW(1989), the car runs fine however when I have driven for a few minutes a vibration occurs when I travel around 60(kph)
This does not happen when I just start driving, only when the car reaches running temps and has been used a little.
I have just recently replaced the engine mounts and a few months back I have changed the gearbox mounts as well.
I know that the propshaft needs balancing but I'm not sure if this is the cause.
The vibration feels like its coming from the back of my seat. I can't feel it in the pedals which leads me to think that its got something to do with the gearbox or drivetrain
Many thanks to anyone who is able to help here.