i thought i had to get a prop as there was a vibration through the seat over 40

 

but then i had to change the rear left tyre which was a bold as a clean shaven head,

 

as i had that changed( 1 rear michelin tyre 2nd hand cost me 30 pounds fitted :) ) the vibration had stopped why was this?

Your wheel was either out of balance or the tyre was defective.

you should have both tyres replaced at the same time really, no point having a nice car if the tyres are uneven and shit. will be outhandled by the fiesta mate! :slap: only messing.

the other tyre has excellent thread

Is it the same model though?

 

Best to have the same make/model of tyre on the same axel. Not so bad back to front, but each side should be the same.