If I had to answer, I'd say no.
Cuz the 16.5 (more specificly the tire for the 16.5) has a bigger contact patch, the geometry is virtually identical cuz of the taller sidewalls.
I look at it like this. If your flying through turn 1b & let off the throttle a bit cuz you're in too hot, I think the 17" will washout first. My opinion.
Tell ya what, set it up & I'll try both for ya.:rofl: