At 150 mph down the long straight at our high-desert testing ground, the ’07 Audi RS 4 performs the same gentle rear-end boogie I remember from an autobahn experience with it in Germany. That particular dance partner was a German model we were testing alongside a BMW and Mercedes-Benz, and all three drivers that day remarked on the peculiar rear-end gyration.
For a car designed and developed within a stone’s throw of the world’s fastest public roads, it’s a strange inconsistency. At the big track at Willow Springs International Motorsports Park in Southern California where Audi staged its stateside introduction, the RS 4 would reach maybe 130 mph down the pit straight. At that speed there was no sign of any tail wiggle. But when you got on the brakes hard for Turn Two, there it was again, the slo-mo shimmy.
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