those 2.4" wheels and tires are beadless. same tire outer diameter as standard 2.2" stuff. they are for racing buggies.
http://prolineracing.com/index.php?p...+tires&x=0&y=0 they should reduce rotational mass as plastic is lighter than rubber in most instances.
Last edited by cumquat; 07-06-2014 at 06:11 AM.