Hurricane Rims are the proper size to mount any of the Terrain Tires. Within the R/C car market, these are commonly referred to as 2.2 Rims as they have a 2.2” diameter. The center of the Hurricane Rim has the goBILDA 16mm pattern in order to mate to any of the 16mm pattern hubs. The offset center allows you to flip the wheel to quickly change the track-width of your robot. The Hurricane Rims have a ‘bead’ for the tire to rest in, but it’s recommended you use CA glue or super glue to bond the bead of the tire to the bead of the rim.