RACE pro runs at 30fps. Ultimately, the Xbox 360 hardware dictated our decision as it also needed to run our level of simulation.
Well, it's very odd for a serious racer. I could understand an arcade racer doing this, but not a simulation style racer. Both Forza 2 and GT5:Prologue do 60fps. We'll have to see how GT5 turns out in terms of its collision simulation, because with Prologue it's a bit of a joke in that regard.