American Racer Dirt Compounds

AMERICAN RACER HEAT RANGE APPLICATION HOOSIER
SD 23 100-130 Wet, heavy conditions / qualifying and heat races D03 / 1100
SD 33 110-140 Tacky hooked up conditions with some abrasion D06 / D11 / 1200
SD 38 120-150 Best when track has abrasion with low tire temp D15 / 1300 / 1200
SD 44 130-160 Use when track is in transition from tacky to slick D21 / LM20 / 1300 / 1325
SD 48 140-180 Moderate heat, slick and/or abrasive tracks with a black strek 1400 / 1425 / D35 / 1350
MD 53 150-190 Hard shiny black/ can take medium heat and abrasion D45 / 1450 / 1500
MD 56 160-210 Hard shiny black slick/ can take heat & abrasion D55 / 1600 / LM40
MD 50 160-220 Rubbder down / high heat / intended for abrasive race surfaces D28 / 2400
MD 57 170-250 Similar to MD 50 slightly harder compound D46 / 2500
HD 70/D3B 200-260 Day time tire grinder/ dull black rubber down D70 / 2700