DEFIANT DF18A 20x9 6x139.7 18et Gloss Silver Machined Wheel

The DF18A is an aftermarket alloy wheel designed for Cadillac, Chevrolet, and GMC trucks and SUVs. DEFIANT Wheels builds aggressive off-road and truck-style wheels for full-size trucks and SUVs. The spoke design is engineered with an off-road aesthetic in mind, combining a bold face design with the structural rigidity needed for loaded trucks and daily-driven full-size SUVs.

When it comes to fitting wheels on Cadillac, Chevrolet, and GMC vehicles, getting the bolt pattern, offset, and hub bore exactly right is not optional. A wheel that sits off by even a few millimeters in offset will change how the tire tracks, create rubbing issues under load, or put unusual stress on wheel bearings over time. The DF18A is built to the correct specifications for the vehicles it fits, which means you get proper caliper clearance, correct hub centering, and the right offset to keep the tire sitting where it should inside the fender.

The cast aluminum alloy construction keeps weight in check while providing the structural rigidity needed to handle everyday driving loads. DEFIANT Wheels builds aggressive off-road and truck-style wheels for full-size trucks and SUVs produces these wheels with consistent quality control across the casting and finishing process, so the dimensions you see on the spec sheet match what arrives at your door.

This model is available in 22x9 and 20x9 sizing, with a 6x139.7 bolt pattern and 18.0mm offset. The 78.1mm hub bore ensures the wheel centers properly on the vehicle's hub without relying solely on lug hardware to center it. The 2980 lbs load rating is appropriate for the vehicle types this wheel is designed to fit, covering both standard driving loads and the occasional full passenger and cargo load. Wheel weight comes in at 43 lbs, which keeps unsprung mass reasonable and avoids adding unnecessary rotational weight that would affect ride quality and fuel economy.

Available finishes include Gloss Silver Machined, Gloss Black, each applied over the cast aluminum face with proper surface preparation. The finish is sealed to resist the brake dust, road grime, and moisture exposure that wheels deal with in normal driving conditions. Center cap fitment is handled through the included center cap, and the original factory center cap will interchange in most cases, which makes this option particularly clean-looking on vehicles where the factory cap design is preferred.

Why Fitment Accuracy Matters

Many owners assume that any wheel with the right bolt pattern will work, but offset and hub bore are equally important. Running the wrong offset puts the tire contact patch in the wrong position relative to the steering and suspension geometry, which affects handling, accelerates tire wear, and can cause rubbing on the inner fender or brake components. The DF18A is spec'd to the correct offset range for each vehicle it fits, so none of those problems occur when you install it on a compatible vehicle.

Lug hardware uses a 60° Conical Seat seat type. Always verify that your lug nuts or bolts match this seat type before installation. Using mismatched lug hardware is a safety issue regardless of the wheel brand or model.

Installation and Use

These wheels are engineered for stock-height vehicles with factory suspension. If your vehicle has been lifted or lowered significantly, verify clearances before purchasing. Always torque lug hardware to the vehicle manufacturer's specification, and re-torque after the first 25 to 50 miles of driving to account for seating. A hub-centric ring may be needed if your vehicle's hub diameter differs from the wheel's 78.1mm hub bore.

Browse the full DEFIANT Wheels collection for other models that fit your vehicle, or explore our truck and SUV wheels and alloy wheels to compare options across different brands and styles. All wheels ship with a center cap included unless otherwise noted in the product listing.