Thunderbolt- the Octopus- can be very rough on tires. Go easy to start. When you get a second set of wheels there is always the option to have someone bring them and grind them down to nothing. Not easy to arrange. Sorry some of the stuff on your thread. Veloce is a TOP pro Coach I'd hire in a beat .This Kibort is just a troll. Dave will be coach for hire at NNJR PCA Watkins Glen event coming up.