Originally Posted by Stratus Racer
Hey John, my name is Paco. I wasn't able to go today so I called him. He says, when you buy new tires they are about 45 mm tall. They wear down as you use them. They can be run til they are about 41 mm. Thats when the foam starts to act crazy and the car drives funny. Three sets should be plenty. Jaco black for the front. Jaco yellow for the rear. There is also a onsite hobby shop. Good luck and see you there.
Sorry... but you will be hard pressed to find a guy in the A or B in 17.5 that will not be running freshies every round. They will also be starting the fronts around 40-40.5mm (on BSR/CRC 38mm wheels) or 39-39.5mm on the Jaco wheels. And the rears around 41-41.5mm.
You will not be able to get away with running large tires in Vegas... the grip is simply too high, and the car will drive like crap. You can run slightly
bigger tires than the above sizes if you glue the sidewalls.
Like masterhit mentioned, freshies are the best way to have a consistent car from round to round. And in 17.5 for Vegas, where consistency and that last tenth can mean the difference between the A and C mains(last year, positions 2 thru ~18 were separated by about 7 seconds), showing up with 3 sets of tires is a recipe for frustration.
Granted, if this is your(the OP) first on-road/12th race, you may simply be trying to learn the ropes and have fun. If that is the case, do whatever your bank account will allow.