15×7.5" Chrome Styled Steel Wheels & P235/75R15XL Tires
5×5.5-inch truck bolt-circle chrome styled steel wheels and extra-load radial tires that form the final road contact patch.
Role in the System
What This Assembly Is
At all four corners of the 1994 F-150 XLT sit the factory 15 × 7.5-inch chrome styled steel wheels with Argent painted spoke pockets, bright center hub caps with black centers, five 1/2"-20 conical-seat lug nuts on Ford’s classic 5 × 5.5-inch (139.7 mm) truck bolt circle, and P235/75R15XL all-terrain radial tires.
Mechanics & Physics
How the Subcomponents Work Together
Hub-Centric & Conical Lug Clamping: Tightening the five 1/2"-20 conical-seat lug nuts to 100 ft-lb stretches the wheel studs like stiff springs, clamping the steel wheel disc firmly against the rotor/drum mounting face so all driving, braking, and cornering forces are transmitted through friction across the hub flange rather than shearing the studs.
Other Assemblies in This System
Part 1: Forged Twin-I-Beam Axles, Radius Arms, Coils & Shocks
Ford’s signature front truck suspension: two cross-pivoting forged steel I-beams paired with coil springs and longitudinal radius arms.
Part 2: 5-Leaf Rear Springs, Shackles, U-Bolts & Shocks
Two-stage progressive leaf spring packs with a thick bottom overload leaf and staggered shock absorbers that tame axle hop.
138.8" WB Contoured Ladder Frame, Crossmembers & Bumpers
Full-length 36,000-psi C-channel steel ladder frame with front accordion crumple horns, 7 crossmembers, cab mounts, and bumpers.