Trailer Fenders

Measure tire diameter and width, then pick a fender that clears the tire by at least 1–2 inches on each side and above. Match the fender length and mounting style (side-mount, top-mount, or single-axle vs dual-axle application) to your trailer’s wheelbase and frame configuration

Common materials are steel (heavy, very durable, can rust without coating), aluminum (light, corrosion-resistant, less impact-resistant than steel), and plastic/composite (lightweight, rust-proof, can crack under heavy impact). Choose based on trade-offs between weight, corrosion resistance, and impact tolerance

Most fenders include or specify compatible mounting brackets and require drilling into the trailer frame or using existing mounting holes; some universal fenders need supplied brackets or straps. Verify bolt size, hole spacing, and whether welding or additional reinforcement is recommended for your frame

Regularly wash off road grime and salt, inspect for dents, cracks, or rust, and touch up paint or coatings as needed. Tighten mounting hardware periodically and replace damaged fenders promptly to prevent tire contact or further structural damage

Fenders must cover the tire to prevent spray and debris; many jurisdictions require adequate coverage and secure mounting. Ensure fenders don’t interfere with tire movement or lights, and check local regulations for specific coverage or reflector requirements

Yes; some fenders are pre-drilled or have flat-top designs for mounting steps, lights, or mud flap brackets, while others offer accessory-specific mounting points. Confirm load rating for steps and wiring access for lights before purchase

Trailer fenders commonly range from budget options under $50 to several hundred dollars for heavyweight or custom-fit models, with average prices around the low hundreds. Higher cost often reflects heavier-gauge materials, better corrosion protection, or custom-fit designs, but compare specifications rather than price alone