Originally Posted by 05RollaXRS

The official explanation of for the added weight is the structural rigidity in the chassis. It was built as a roofless convertible chassis with reinforcements in the doors, sills, trunks, underbody etc. then Lexus welded a roof with B-pillar on it for a coupe chassis. I feel that rigidity when I have different bumps on both side of the lane. The whole car thumps with authority as one unit despite having different bumps to tackle on each side while many cars chassis shudder uncontrollably due to torsional flexing. The solid build quality is what the benefit out of the weight.

There are other luxury items adding weight like 18 speaker ML system, 70 lbs each front seats, cooling systems etc.

Originally Posted by Yri

So assuming the chassis is really stiff, it probably has little to no chassis bending during hard cornering. Also assuming this, the RC F is probably SOLID in a crash/crash test

Originally Posted by 05RollaXRS

90 mph feels like 50 mph in the car even while going through high speed turns.

Originally Posted by 05RollaXRS

Yes true. 5 star crash test rating. I love the torsional rigidity especially with my tires inflated to 39R/37F to reduce sidewall deformation at high corner loads. Ride has some head bobbling at higher speeds, but I love the feel as it gives some rawness/edginess to an otherwise, very luxurious feel of the car. Also, the high rigidity makes the car mask speed very well. 90 mph feels like 50 mph in the car even while going through high speed turns.

Originally Posted by cvt

I disagree...90 feels like 30. The first time I got to 90 was by complete accident, the ML stereo does not help either as it isolates you even more.....lol.