Ulti Storm & Invincible foam tires

Ulti have introduced three new compound foam tires for the 1/8th onroad market, the Storm G8, Invincible S11 and Invincible RS170. The entry level Storm G8 tire use a new bonding method and as there is no vertical bonding, the resistance during driving is decreased. Using the G8 compound, the tires come premounted on their strong carbon wheels. The Invincible tires use the same gluing method but a different high grip compound, with the S11 sold on lightweight wheels, while the RS170 is available on both types of wheels and uses a multiple foam layers, 2 for the front and 3 on the rear.

Source: Nuclear [nuclear.ne.jp]