[DaveR]

Jack21 - I plan on using 17 inch wheels, so I dont' think clearance is an issue. Thanks for the input on weight, 5 lbs seems like a lot when you read race literature, but maybe it isn't for an amateur like myself. I thought the up and down motion of the front wheel on a bumpy track in a turn might impact handling. Warping is a major reality, and I failed to mention that most of the weight difference is due to the wall thickness between 13" GT48 rotor and 12.19" Ultralight (thin wall) 32 vane rotor.

Bob,

Thanks for the caliper advice, I was thinking along the same lines since it isn't rotating mass. I definately want to go fast for more than one lap at a time. My original question was in regard to front brakes, but does superlight versus dynalight also apply to the rears?