Peter, get the Avons from MOR in Munich. They are VR rated and can handle the power. Anything less and you may end up racing down the autobahn on your bare rims.
Those Avon tires are not VR rated, just V rated, witch is a main difference. Old VR rated tires had an unlimited speed limit. The manufacturer just claimed 240 Kilometers per our under full weight load of the tire. Under less load the top speed could be higher rated by the manufacturer. That is why for excample in Germany the tire brand was written to the papers on cars faster than 240.
V-rated tires have a speed limit of 240 Kilometers per hour without exceptions. Faster driven Avons can be a death trap.