Product Description
Poly Press-On (87A)
Specifications: 13.000 inch diameter x 5.500 inch width (13.000" x 5.500" | 13 x 5.5 wheel | 13 x 5-1/2 | 330.20mm x 139.70mm)
Specifications
Wheel Specifications
| Outside Diameter (in) | 13.000 |
| Width (in) | 5.500 |
| Outside Diameter (mm) | 330.20 |
| Width (mm) | 139.70 |
| Drive Tire Profile | Smooth Flat |
| Material | Cushothane EZ 85A |
Frequently Asked Questions
Q: What does EZ mean in the SU 13X5.5X8-SF-EZ part number?
A: EZ stands for an 85A durometer polyurethane compound, which is softer and more flexible than harder compounds like XL (97A). The SU 13X5.5X8-SF-EZ features a smooth flat (SF) tread profile and Cushothane EZ 85A material. The 85A durometer provides good grip and comfort while maintaining durability for electric lift truck applications. It is non-marking and suitable for indoor warehouse use.
Q: What is the difference between SF-EZ and SF-P variants of the 13x5.5x8?
A: The SU 13X5.5X8-SF-EZ uses Cushothane EZ 85A compound (softer, more flexible). The SU 13X5.5X8-SF-P uses polyurethane compound (harder, more load-bearing). Both have smooth flat profiles and 13x5.5x8 dimensions. The EZ version provides better shock absorption and grip, making it ideal for rough or uneven floors. The P version is harder and more durable for heavy-load applications. Choose EZ for comfort and grip; choose P for durability and load capacity.
Q: Can the SU 13X5.5X8-SF-EZ be used on a high-load truck?
A: The 85A durometer compound is softer and better suited for standard to moderate-load applications. For high-load service (5,000+ lb capacity), a harder compound such as the SF-P variant or XL 97A is recommended. Using a soft compound on heavy loads accelerates wear, compression set (permanent deformation), and failure. Always verify your truck load class against the tire rating. Consult the tire manufacturer for specific load ratings at your operating weight.
Q: How should I store the SU 13X5.5X8-SF-EZ when not in use?
A: Store the tire indoors at room temperature (60-75F) away from direct sunlight and ozone sources (electric motors, arc welders). High heat and UV accelerate polyurethane degradation and cracking. If the tire is mounted on the truck, park the truck indoors or under a cover. Avoid stacking tires directly on concrete; use wooden pallets to allow air circulation. Check monthly for cracks or hardening. Replace any tire showing significant color change (darkening) or surface cracks.
Q: What performance issues occur when the SU 13X5.5X8-SF-EZ hardens with age?
A: As the 85A compound hardens (durometer increases above 90A), grip decreases and wheel slip increases during acceleration or heavy lifting. The tire becomes stiff and loses shock absorption, causing vibration and discomfort during operation. Braking efficiency may also decrease. Hardened tires crack more easily under load or during turns. These issues indicate the tire has reached end-of-life and must be replaced. Do not operate with severely hardened tires as they can separate from the hub.
Q: Is the SU 13X5.5X8-SF-EZ suitable for a fork truck with manual steering?
A: Yes. The smooth flat profile and 85A compound provide good grip and handling for manual steering applications. The softer durometer offers good feedback to the operator. The 5.5-inch width distributes load evenly and reduces steering effort. For power-steering trucks, this tire also performs well. Verify the hub bore (8 inches in this case) matches your truck axle before installation.
