The 2015 Silverado's regular cab has 42.4 inches of front head room, 60.73 inches of front hip room, 45.27 inches of front leg room and 66.03 inches of front shoulder room, according to Chevrolet.com. The truck is 80 inches wide and 116.9 inches from front bumper to back of cab.
There are three types of cabs available for the Chevrolet Silverado; regular, crew and double. Most measurements vary only slightly between the styles, although the double cab boasts 6.3 extra inches of second leg room. The distance from the front bumper to the back of the cab varies from 116.9 inches to 150.9 inches.