I have a 2002 Audi A4 Quattro 1.8t 5 speed. I thought the vibration I was expierencing were the tires, so I got all new tires and full 4 wheel alighnment done on the car. I still have a rapid loud vibration from 40 to 55 mph in any gear, whether I am accelerating, decelerating or just coasting. It does have after market 17 inch rims. I was wondering if anyone knows what could be causing this issue.