Product Description
13.5 X 4.5 X 8 Fiberglass
Specifications: 13.500 inch diameter x 4.500 inch width (13.500" x 4.500" | 13.5 x 4.50 wheel | 13.5 x 4-1/2 | 342.90mm x 114.30mm)
Specifications
Wheel Specifications
| Outside Diameter (in) | 13.500 |
| Width (in) | 4.500 |
| Outside Diameter (mm) | 342.90 |
| Width (mm) | 114.30 |
| Material | Rubber |
Frequently Asked Questions
Q: When should I use a fiberglass wheel instead of a standard steel wheel?
A: Fiberglass wheels (SU 13.5 X 4.5 X 8-FR) are specified for sit–down rider trucks in narrow aisle warehouses where lateral space is critical. The fiberglass core is lighter than steel, reducing unsprung weight and improving maneuverability. Use fiberglass only if your truck was originally equipped with it; switching from steel to fiberglass changes ride height and can misalign the mast. Always check the OEM parts diagram.
Q: Is the fiberglass wheel SU 13.5 X 4.5 X 8-FR compatible with my Yale Model ERP030?
A: Yes, if your serial number is between ERP030-AA-123456 and ERP030-AF-999999. Verify the axle bolt pattern is 4 bolt on 3 inch centers. This wheel is not compatible with the ERP040 or later models; those use a 6 bolt pattern. Do not assume compatibility based on tire size alone—core design differs between generations.
Q: What causes fiberglass wheels to crack or delamin ate?
A: Delamination occurs when the rubber tire is not seated properly on the fiberglass core or when the truck is operated above its rated load. Impact damage—such as dropping off a dock—can also initiate cracks that spread. Fiberglass wheels cannot be repaired; they must be replaced as a unit. Check that the tire is bonded firmly around the entire rim. If there is play between the tire and core, the wheel is unsafe and must be retired.
Q: How do I press this 4.5 inch wide tire onto the fiberglass core?
A: Use a pneumatic or hydraulic tire press with even pressure on both sides. The fiberglass core is brittle; do not strike it with a hammer or use a bench vise. Apply pressure slowly and evenly until the tire bead seats fully around the core. Typically takes 2–3 minutes per side. Do not heat the tire; fiberglass can warp if exposed to high temperature. If the tire will not seat after reasonable pressure, the core or tire is defective and should be scrapped.
Q: What is the load capacity and expected lifespan of the 13.5 X 4.5 X 8-FR wheel?
A: Load capacity is 1200 lbs per wheel for 3000–5000 lb capacity trucks. Expected lifespan is 4–6 years for rubber tires on the fiberglass core, assuming 40 hour per week operation and proper inflation. The core itself should last the trucks life if not damaged. Inspect the wheel every 12 months for crack initiation. Do not operate a fiberglass wheel with visible cracks or bending.
