Lexus has not been known to post such information in the past (BMW does) but I'll ask anyway. What is the torsional rigidity of the RC and is it different for the F version? I imagine the car to be in the mid to high 30s. Possibly 40,000 nM/degree. 40k would be a nice # as the M4 and all of BMW's chassis building might is 40k. For anyone who doesn't know, 40k is very very hard to achieve on this type of road car without a cage. Very. Hard. Just a guess based on my knowledge and experience and knowing the construction of the RC as well as its overall profile, size, weight, and shape.
Chris Los Angeles