Well, the non-turbo 4BD1 in my County has pushed me around on 255/85/16 Bighorns for 4 years or so, sometimes a turbo would be nice but I don't own a sports car. When I put 7.50R16s on it for a few months, I couldn't really tell any difference, it was still as slow/fast/responsive as with the larger tyres. It isn't like i'm trying to shave milliseconds off a quarter mile personal best.
I wouldn't think twice about putting 255/85R16s on my stock standard FFR.

