HPI Racing have introduced the 28R Challenge tyre set. The pre-glued tyres utilise a unique blend of rubber to deliver good traction with high durability. The wheel is a 24mm with 0mm offset dish design moulded in a stiff plastic for improved high-speed stability and it features a printed HPI logo to give the wheel an unique look. The soft closed cell foam inserts used in the wheel supports the tyre uniformly to give good all-round traction and even tyre wear both indoors and outdoors. The tyres are sold in sets of four.