Product Description
Poly Press-On, Smooth Crown
Specifications: 13.000 inch diameter x 4.500 inch width (13.000" x 4.500" | 13 x 4.5 wheel | 13 x 4-1/2 | 330.20mm x 114.30mm)
Specifications
Wheel Specifications
| Outside Diameter (in) | 13.000 |
| Width (in) | 4.500 |
| Outside Diameter (mm) | 330.20 |
| Width (mm) | 114.30 |
| Material | Cushothane EZ 85A |
Frequently Asked Questions
Q: What does SC-EZ mean in the SU 13x4.5x8-SC-EZ part number?
A: SC stands for Smooth Crown, which describes the tread profile. EZ stands for Cushothane EZ 85A, which is the specific polyurethane compound used. The 85A designation refers to the durometer or hardness rating. Smooth Crown provides even load distribution and reduced tracking wear on hard floors.
Q: Can I interchange the SU 13x4.5x8-SC-EZ with the SU 13X4.5X8-FT-P?
A: No. The SU 13x4.5x8-SC-EZ uses Cushothane EZ 85A material while the FT-P uses standard polyurethane. The Cushothane EZ compound has different hardness, wear characteristics, and flexibility. Do not mix tire compounds on the same axle; use the same model across all drive tires to prevent uneven load distribution.
Q: What are the advantages of the Cushothane EZ 85A material in the SU 13x4.5x8-SC-EZ?
A: Cushothane EZ 85A provides excellent shock absorption and a smoother ride compared to standard polyurethane. The softer compound (85A durometer) is easier on drive motors and reduces vibration. However, it wears faster than harder compounds, so use it only when ride comfort and motor protection are priorities.
Q: Is the SU 13x4.5x8-SC-EZ non-marking?
A: Yes. Cushothane EZ is a non-marking polyurethane formulation. It will not leave black marks or residue on finished floors, making it suitable for retail, food processing, and clean room environments.
Q: What conditions favor using the SU 13x4.5x8-SC-EZ over a standard polyurethane tire?
A: Use the SU 13x4.5x8-SC-EZ when your truck frequently operates on hard concrete, wood, or polished floors where ride comfort reduces operator fatigue. Also use it if your motor shows signs of strain or if you need longer tire life due to reduced friction. Avoid it in outdoor or rough-surface applications where durability is essential.
Q: How should I store SU 13x4.5x8-SC-EZ tires before installation?
A: Store tires in a cool, dry location away from direct sunlight and extreme temperatures. Cushothane EZ is more sensitive to UV degradation and heat than standard polyurethane. Do not stack tires in direct sunlight for extended periods. Proper storage extends shelf life from 3-5 years.