I am new to the forum and will be getting my first Q7 (2010 TDI P+, buyback) this weekend. Needs tires. Came with with 20" , dual 5spoke, wheels. Ride is pretty firm and I don't need performance handling tires. I was thinking of getting a used set (from local salvage yard) of 18", 6 spoke, Q7 wheels from a 2015 standard (8" wide); and am thinking of new 245/60 tires, to get a better ride. I saw the post from Nayr (4/17/17 thread) that he put on a set of Porsche 17" wheels, but apparently had to grind down the calipers for the wheel to fit on his 2015 Q7. Would the 18s have have the same problem as the 17s regarding the caliper fit? Do you see any other issues? TPMs? I would appreciate your insights. Also, Input on quiet and durable (I live on a gravel road) M+S tires would be appreciated.