D30’s have been discontinued by Hoosier
Hoosier Quarter Midget Tire 34.5/6.5-6
Available in D10 and A35
D10 is designed for a soft, wet, tacky track condition.
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.