Vibration under braking

[TeaVR]

I’ve noticed under (moderate to heavy) braking a vibration in the car.

The feeling is NOT through the steering wheel, but through the seat. There is zero vibration in the car during motorway cruising - it’s just under braking. Almost feels like the rear is loose. Quite unnerving.

Any ideas what could be causing this?

It might be a coincidence, but I’ve just had the rear tyres changed.

[TeaVR]

Agree.

What about the diff?

[TeaVR]

EBRANDON1 said:

Also to add, when I did get my tyres changed, the vibration got slightly worse, almost as if the better grip made the vibration more prominent compared to the tyres that had worn in whilst vibrating (maybe, I'm no mechanic though)

That’s very interesting. Thanks