&8216;RT&8217; stands for &8216; Road & Trail&8217; & that is exactly where the Moto RT works best. The RT is 100% DMR designed because we wanted to offer a tyre for 24” & 26” wheels that would out-perform all others on hardpack dirt street & skateparks. You&8217;ll find that the Moto RT is super fast responsive & lightweight & it&8217;s large volume casing resists blowouts if you hangup. The 3.5mm deep tread blocks are dense enough for street & park but are spaced enough to bite on hardpack dirt. Sizes 24"x 2.2"26"x 2.2"26"x 2.4"