The Martin Wheel DM408B-5I is a complete trailer tire and wheel assembly designed for utility, RV, and boat trailers. This bias ply tire exceeds DOT requirements for safe highway use and provides reliable performance in demanding applications. Whether you’re replacing a worn tire on an existing trailer or setting up new equipment, this Loadstar assembly delivers the durability and load capacity you need.
The 480/400-8 LRB tire in this assembly is engineered with bias ply construction for maximum durability and long-term reliability. The included 5-hole wheel features a powder-coat finish that resists chipping, scratching, fading, and corrosion, maintaining appearance and protection through seasons of use. Installation and removal are straightforward, making this an excellent replacement option when your trailer needs new footwear.
Features and Benefits
- Heavy-Duty Load Capacity: Supports up to 590 pounds at 60 psi, providing robust support for utility, RV, and boat trailers.
- DOT Compliance: Exceeds DOT requirements for safe highway use on all trailer types.
- Corrosion-Resistant Wheel: Powder-coat finish on the wheel resists chipping, scratching, fading, and corrosion for extended life and maintained appearance.
- Bias Ply Construction: Durable tire design built to last through regular use.
- Quick Installation: Easy to install and remove, making tire changes and maintenance straightforward.
Specifications
- Brand: Martin Wheel
- Model: DM408B-5I
- Tire Size: 480/400-8 LRB
- Tire Diameter: 21 inches
- Tread Pattern: K371
- Load Range: B (Bias Ply)
- Maximum Load: 590 pounds at 60 psi
- Bolt Pattern: 5 holes on 4.5-inch circle
- Wheel Finish: Powder-coat
WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defect or other reproductive harm. For more information: www.P65Warnings.ca.gov








