The last few weeks I've been occasionally feeling this slight wobbling left to right feeling through the seat (not the steering wheel) seems to only be felt at low speed. There is no noise or harsh feeling just seems like the road is uneven...
As I can't feel it in the steering I'm starting to consider it could be and broken rear diff mount as I've heard these can go when you up power levels around the 200 mark.
An ideas what this could be?