Interesting tidbit on Nissan GTR

Widely speculated to be underrated at 480hp, Nissan engineer clears up mistaken assumption on drivetrain losses.

Nissan engineers insist the GT-R really does only have 480 hp. Motohiro Matsumura, president of Nissan Technical Center North America, Inc. in Farmington Hills, Michigan, says our dyno test story, which revealed the GT-R develops 430 hp at the wheels, is basically right. But he insists our estimate of a minimum 15-percent friction losses -- which suggests the GT-R is making 507 hp -- is wrong. Matsumura-san says ultra-low friction bearings in the wheel hubs and transmission, plus the careful alignment of the all-wheel-drive system's propshafts, mean friction losses are reduced to an unprecedented 10 percent or so. We're going to get a GT-R back and conduct some coast-down tests to see if he's right.