Have only had a Scooby for a couple of months MY00

Have started to get vibrations in the car when I exceed 80mph. Does not seem to feed through the steering wheel but throughout the car, I especially feel it through the pedals.

Did not get these before and it happens at the same speed every time. Have taken it to the same revs in other gears and do not get the same problem. I have recently had new rear tyres fitted but did not think it could be this as is is limited to 80 and above and the car acts as normal below these speeds.

Any Ideas and help would be much appreciated.

 

Could easily be the new tyres - if they are not balanced correctly, they will vibrate the faster they get.
I'd take them back & get the balanced correctly if I were you.