http://www.bmwcca.org/node/8852
"Compared to the RS4, the magazine noted, “the BMW [335i] was almost one second quicker around VIR … and if it weren’t for the four-wheel-drive system … the RS4 would have been farther behind the competition"
"335i’s best lap (3:10.5) was 1.2 seconds quicker than the M coupe’s"