[RKDinOKC]

The proper 4 wheel drift slip angle depends on the tires and the road surface. While yes most tracks and low profile tires are low slip angles, some tracks, wet condtions and some tire compounds will go faster at an increased slip angle.

Remember watching F1 races when they had both Michelin and Bridgestone tires. The Michelins had a very abrupt edge while the Bridgestones had a soft edge. That is the amount of grip they have just past the maximum slip angle. When conditions would change the Michelin guys would go sliding off the track and the bridgestone guys would be faster. At least until the Michelin drivers learned where the new edge was for the conditions.