With tall tires--especially those purpose-built for drag racing--you often need greater clearance than you would with a low-profile handling tire because the sidewalls will flex more. These M/T 28x11.50-15 ET Streets (true measurements: 279/16x105/8) on 15x7s fit our Duster with about an inch of clearance to the leaf spring and the quarter-panel, but the wheel lips need to be folded to prevent rubbing during turns and hard launches.