My 2005 A6 4.2 came with 245/40/18 tires, I am thinking of going with a 255/40/18 replacement tire. The OD on the OEM tire is 25.7, the OD on the replacement tire is 26.0. I am concerned that the larger tire may rub or cause a problem with the Quattro system. Does anyone have any experience with the larger tire size? Does it rub? Should I be concerned about the impact on the Quattro system? Can I stick with the OEM rims?

Kevin

 

hi kevin... i have 255 40 17" summer tires on my 2001 4.2 ... 25.03 " diameter. I will check on my winter tires tomorrow for diameter size... jtv 4.2