Wide Body Rib 2WD Front Buggy Tires (Silver) (2)Team Losi Wide Body Rib 2WD Front Buggy Tires (Silver) (2) This is a set of two Losi Wide Body Rib Front Buggy Tires in Silver rubber compound with included foam inserts. Silver (S); Silver is the most common and reliable Losi compound. It works well under varying conditions and is exceptional on blue groove and soft surfaces. Red (R); Red compound picks up where Silver stops. This soft sticky formula works well on dry, hard, slick surfaces. Pink (P);