Peterbilt 589 Full Radius Fenders

Frequently Asked Questions About Peterbilt 589 Full Radius Fenders

What are full radius fenders and how are they different from half fenders?

Full radius fenders are designed to follow the complete curve of the wheel and tire, covering the wheel well from front to back in one continuous arc. Unlike half fenders, which only cover a portion of the tire, full radius fenders provide coverage over the entire top half of the wheel, offering more complete protection from road spray, mud, and debris while giving the truck a classic, rounded look.

Will these fenders fit my Peterbilt 589 without modification?

Fenders in this category are designed specifically for the Peterbilt 589 chassis and axle configuration, so they are built to align with the factory mounting points and wheelbase for a proper fit. That said, fitment can vary slightly depending on your truck's specific axle setup, tire size, and any aftermarket suspension changes, so it's a good idea to confirm your truck's specs against the product listing or check with our team before ordering.

What materials are these fenders made from, and how do they hold up over time?

Full radius fenders are typically offered in materials like steel, aluminum, or stainless steel, each with different weight, durability, and maintenance characteristics. Steel fenders tend to be more affordable and rigid but can be prone to rust if the finish is damaged, while aluminum and stainless steel options resist corrosion better and are lighter, though they usually come at a higher price point. Choosing the right material often depends on your priorities around weight, long-term appearance, and budget.

What finish options are available, and how do I maintain the finish?

Depending on the material, these fenders may be available in raw, painted, powder-coated, or polished finishes. Polished stainless or aluminum finishes require regular cleaning and occasional polishing to keep their shine and prevent water spotting or oxidation, while painted or powder-coated finishes are more low-maintenance but can chip if impacted by road debris. Regular washing and prompt attention to any chips or scratches will help extend the life of whichever finish you choose.

What's involved in installing full radius fenders, and do I need any special brackets or hardware?

Installation generally involves mounting the fenders to fender brackets or fender irons, which attach to the frame or axle depending on your truck's setup. Some fenders come as a complete kit with brackets and mounting hardware included, while others may require you to purchase brackets separately or reuse your existing hardware, so it's worth checking the product description carefully before you buy. If you're not confident tackling the install yourself, a truck accessory shop or dealer can typically handle the job in a reasonable amount of time.