Product Description
Poly(85A)Press On
Specifications: 12.000 inch diameter x 5.500 inch width (12.000" x 5.500" | 12 x 5.50 wheel | 12 x 5-1/2 | 304.80mm x 139.70mm)
Specifications
Wheel Specifications
| Outside Diameter (in) | 12.000 |
| Width (in) | 5.500 |
| Outside Diameter (mm) | 304.80 |
| Width (mm) | 139.70 |
| Drive Tire Profile | Tapered Side Wall |
| Material | Cushothane EZ 85A |
Frequently Asked Questions
Q: What is the difference between 5.5-inch and 4.5-inch width tires for electric lift trucks?
A: The SU 12X5.5X8-TSW-EZ is 1 inch wider than standard 12x4.5x8 tires, providing a larger contact patch. The wider footprint distributes load over more surface area, reducing ground pressure and improving stability on uneven floors. Wider tires also enhance steering response and can reduce tire wear on extended operating cycles. Verify your lift truck frame can accommodate 5.5-inch width before ordering.
Q: Is the SU 12X5.5X8-TSW-EZ a direct replacement for my existing 12x5x8 tire?
A: The SU 12X5.5X8-TSW-EZ is 0.5 inch wider than a 12x5x8 tire. You cannot assume direct compatibility. Measure your existing tire and confirm your lift truck axle can accommodate the additional 0.5 inches of width. Check equipment documentation or contact your lift truck manufacturer before substituting widths.
Q: What does the 85A durometer rating mean for the SU 12X5.5X8-TSW-EZ?
A: The 85A durometer means the Cushothane EZ compound has medium hardness. Compared to 97A (harder), 85A provides better grip and vibration damping but wears slightly faster under heavy use. Compared to 75A (softer), 85A offers longer tire life and less rolling resistance. 85A is a balanced choice for general warehouse and indoor dock operations.
Q: How does the tapered side wall (TSW) profile affect handling on the SU 12X5.5X8-TSW-EZ?
A: The TSW profile tapers the tire sidewall inward toward the hub, improving lateral stiffness and steering precision. Combined with the wider 5.5-inch footprint, TSW provides excellent maneuverability in tight aisles and reduces steering effort. You will notice improved responsiveness and reduced side-slip compared to flat-profile tires, especially on smooth warehouse floors.
Q: Is the Cushothane EZ compound on the SU 12X5.5X8-TSW-EZ non-marking?
A: Yes. Cushothane EZ is a non-marking polyurethane, suitable for clean environments including retail spaces, offices, and hospital floors. The tire will not leave black scuff marks under normal conditions. Test the tire on your specific floor type during a trial period to confirm no marking occurs with your particular floor coating.
Q: What is the typical lifespan of the SU 12X5.5X8-TSW-EZ before replacement?
A: Cushothane EZ press-on tires typically last 3-5 years under normal warehouse duty. Check tires quarterly for cracking, uneven wear, or chunking. Replace immediately if wear reaches the hub, if you observe chunks missing from the tire edge, or if cracks exceed 1 inch in length.
