Hey all! Am new to the forum having just got my Black Edition Cabrio. Great forum with great info My reason for posting? Having only had the car for nearly 3 weeks now I have been getting used to it, so far so good bar 2 issues. Last week I managed to drive over knife blade which someone had left in the road, cut the threads on the tire. Had x4 Conti Sport 2's on there but the tyre insurance people replaced the flat with a Conti Sport 3 and did not balance it. After feeling the vibrations I managed to get a balance completed and things were much better. Been driving to work since, not sure if I am going crazy or not, but I think I can still feel a constant but less aggressive vibration, at more or less all speed, thru the car in general. Never had a cabrio before, coming from BMW's, I am thinking the issue might be one of the following: 1) The Cabrio is less ridgid cus it's a Cabrio 2) The other wheels / tyres might not be balanced 3) dodgy / warped wheel? 4) I am feeling everything on the road cus I am now running on 18's with hard suspention The road next to where I live has just been surfaced and when in my old car I would not really feel anything when driving down it on 17's. In the A3 I feel this "vibration" thru the car, not so much thru the steering, but it happens. Was wondering if anyone might have any thoughts on this as the dealer I got the car from cannot see it for a few days... Many thanks in advance for any help / thought's!