One problem related to tire sidewall has been reported for the 2010 Audi A5. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Audi A5 based on all problems reported for the 2010 A5.
The tire tread separated completely from the sidewalls, on both sides. There was no indication of any issues, low pressure, pulling etc. I was driving on the highway, car driving normal. I started to hear a pulsating vibration sound like a wheel bearing. I let off the gas to slow down a bit and listen, then there was some loud noises, I pulled over to find the tread had separated completely all the way around.