UPDATE 1/09/14:
Preliminary specs for the RC-F:
5L V8
480 HP
384 lb-ft Toque
3970 LBS
7300 RPM redline
Automatic Transmission only (No DCT)
Tires: Michelin Pilot Super Sports sized 255/35 in front, 275/35 in back.
The lexus also features a fuel saving technology borrowed from the Prius
according to MT
"A switch to electric phasing on all four cams brings greater variability and precision, and lets the engine borrow the Prius' more efficient Atkinson cycle operation during low-demand cruising conditions. So, while BMW downsized its M3/M4 engine from a 4.0-liter V-8 to a 3.0-liter I-6 and added twin turbochargers to compensate, Lexus virtually downsizes its 5.0-liter V-8 to roughly a 4.2-liter just by leaving the intake valves open for part of the compression stroke during Atkinson operation."
Would you consider the Lexus RC F if it had similar specs to the M4 and if it were ~10% cheaper. Seems like Lexus is really looking to compete with BMW on this one since it seems they want to
unveil it in Detroit at the same time as the M4 will be unveiled. If they really want to compete their are going to have to win the price war as well.
I'd personally stick with the M4 although I'll admit that the retractable spoiler on the RC F is pretty cool