This 2016 Western Star 4700 day cab is powered by a DD15 engine rated at 450 horsepower and 1650 lb-ft of torque and paired with a 10-speed manual transmission. It is equipped with a 12,000 lb front axle and 40,000 lb rear axle with air suspension. The rear axle ratio is 3.42 and it includes a Jake brake. The wheelbase is 172” and it rides on 22.5 tires