These are the Suburbs M4 (Super Soft) 2.0 Short Course Tires and Foam Inserts from Pro-Line. FEATURES: Long-lasting and aggressive tread for use on a variety of blue- groove and clay track surfaces M4 (Super Soft) compound ROAR legal Soft closed cell foam inserts YOU WILL RECEIVE: Two Suburbs M4 2.0 Short Course Tires and Foam Inserts REQUIREMENTS: Short course wheels Tire Glue DTXR2000, DTXR2002 SPECIFICATIONS: Diameter: 4.24" (108mm) Width: 1.81" (46mm) Mounting Bead: 2.2" (56mm) Outer x 3.0" (76mm) Inner jxs 04/12/11 ir/jxs &