Sorry if that has been asked recently, but I plan to join my buddies in 1/12th scale GT class, with rules here using 17.5T motor on 1S blinky with blue striped spec foam tires. We mostly drive on small (technial) to medium (mixed, i.e. longer straighs and long sweepers) indoor carpet (no CRC, just ETS) tracks.

What would be some good roll-out range to start with? Thougt I had read something around 80-87mm so, shoud I aim for rougly that?
And what tire-diameter would you recommend to start with (probably not really gonna race this class any time soon, but I'd like to get about 5 sets, have them cut and then change them regulary after driving, so I can maximize time between cutting them again. My idea would be maybe up to 42.5mm for the rears in this class and 1mm less in front. Would that work or ist too big?