Together with an appearance standard for body shells and a clarification on rules for 1/8 scale brushless motors ROAR also introduced 550-size brushless motor specifications for the 1/10 scale 4×4 Short Course class. The specifications for 550 motors are only legal in the 4×4 Short Course category.
ROAR has amended the tire rules in the Short Course category to specifically exclude the use of ribbed front tires. Use of ribbed front tires is inconsistent with a category that has achieved most of its popularity on the basis of scale appearance. Therefore, ROAR has decided not to allow use of this type of tire on this basis.