Hoosier Asphalt Quarter Midget Tire 15033 32.0/4.5-5 SH Compound: A35 Asphalt Tracks: The A35 is a high traction compound that will work well on tracks that lack grip, such as colder track conditions, slick or green track surfaces. The A35 will grip quickly with little heat and will be consistent throughout long green lap runs. Indoor Surfaces: The A35 is more appropriate on indoor track surfaces that are tacky and high grip from the buildup of rubber in the corners.