Rubino Pro Speed ​​G2 tire. 0 by Vittoria is designed for weight loss maximizing speed and reducing rolling resistance providing the perfect racing kit for those who prefer the feel and support of a nylon frame. These tires use proven Vittoria graphene compounds in a 3C structure designed to reduce rolling resistance so you can get the most out of every effort included with the pedals. Graphene gets the credit when it comes to improving grip and increasing durability and it also has an impressive strength-to-weight ratio which allows Vittoria designers to use a thinner application of the composition reducing rotational mass for faster riding and higher speeds.. The graphene compound is placed on top of the nylon body and has a high structure with a density of 220 TPI which adds a bit of flexible support to the thin compound which was developed primarily for weight loss so you can use all the free speed that asphalt has to offer. .