Platform Interior Trim Vantage Gear Ratio 3.91 Front Axle Rating (Pounds) 20,000 Rear Axle Rating (Pounds) 46,000 Rear Tire Quantity Tandem Front Tire Model MN XZE 425/65R22.5 Rear Tire Model GY FUEL MAX RTD 11R22.5 16PR Front Tire Size 425's Rear Tire Size 11R22.5 Rear Suspension HEND HAULMAAX EX (HMX)460 46K Lift Axle Tire Size 19.5 LP Wheelbase (Inches) 268 Front Axle Model PACCAR FX-20 ST AXLE RATED 20K Rear Axle Model MERITOR RT46-160 46K Lift Axle Quantity 3.0 Lift Axle Rating (Pounds) 10,000