Hoosier's website says the measuring rim for that tire was 8" wide.
Are you looking to put these on a Dart? Let me know how it turns out.
I put a 27*10.5 Quick Time Pro (section width 10.1 as per Hoosier) on my dart with 15*8 wheels with 5.5 backspace, 3/8 spacer, monoleaf springs and rolled fenderlips. I rubbed the letters off of the backside of the tires on the inside, and couldn't get my fingers between the sidewall and rolled lip on the outside. My springs have the car sitting 1.5" higher than stock as per Calvert.
I've got B-Body 10" drums on the back of my car.
I would love to fit that tire on my car, but I don't see where I could get an extra inch without spring relocation.