Can anyone tell me if this is the fastest line for this turn (RWD obviously)...

http://www.yugiohzone.com/turn.gif

the blue circle is the traction circle (key in upper left) and the purple dot on the circle is representing the weight transfer, i also wrote down the drift angle for each keyframe of the turn. My drawings and stuff may be a bit off, but i think youll get the point.

 

not drifting and actually hitting your apex while taking the widest possible arc thru the corner is going to be fastest.

FWD RWD it doesn't matter.

Unless we know what the next corner is, thats all there is to it.

 

Je concur.

One thing to keep in mind is that slip is required by ANY tire to generate maximum cornering force. The key is to determine what that angle is and how to modify it according to where you're coming from and where you're going to (how the corners and straights prior to and after this turn affect your line).

A "pure" corner as you've drawn isn't likely to be often found in the real world. Little things like bumpy pavement start throwing theory out the window...