Product Description
SU 13X4.5X8-TSW-EZ is a poly press-on tapered drive tire with a 13 inch outside diameter, 4.5 inch tread width, and 8 inch inside diameter. Manufactured from high-durability non-marking polyurethane and equipped with a steel core, this tire features a Traction Smooth Wide (TSW) profile and is designed for electric lift truck drive assemblies requiring a press-on, tapered fit. Cross-references include Superior Tire S130045080, Total Source SYTS13X4.5X8T, and Crown 079494-349-01.
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
Material & Construction
| Tread Material | High-quality molded polyurethane |
| Core Material | Heavy-duty steel band |
| Finish | Precision-machined surface finish prior to mounting polyurethane |
Part Numbers
| OEM Part Number | SU 13X4.5X8-TSW-EZ |
Wheel Specifications
| Outside Diameter (in) | 13.000 |
| Width (in) | 4.500 |
| Outside Diameter (mm) | 330.20 |
| Width (mm) | 114.30 |
| Drive Tire Profile | Tapered Side Wall |
| Material | Cushothane EZ 85A |
Frequently Asked Questions
Q: What does TSW profile mean on the SU 13X4.5X8-TSW-EZ?
A: TSW stands for Traction Smooth Wide. This profile combines a wide, smooth contact patch with subtle tread pattern ridges designed to enhance grip on drive wheels during acceleration and heavy load lifting. The 13x4.5x8 dimensions with TSW tread make it suitable for drive (powered) axles on electric lift trucks. It is non-marking polyurethane with a steel core for maximum durability.
Q: Is the SU 13X4.5X8-TSW-EZ equivalent to Superior Tire S130045080?
A: Yes. The SU 13X4.5X8-TSW-EZ is a direct equivalent to Superior Tire S130045080, Total Source SYTS13X4.5X8T, Crown 079494-349-01, and the generic cross-reference 13458. All these part numbers denote the same 13x4.5x8 TSW-EZ profile tire with identical material and performance characteristics. Confirm your truck documentation lists one of these numbers before ordering.
Q: Can I use the SU 13X4.5X8-TSW-EZ on both drive and load wheels?
A: The TSW profile is designed primarily for drive wheels where traction and grip during acceleration are critical. Load wheels (non-powered) typically use smooth crown or flat-tread profiles for better rolling efficiency and reduced drag. Installing a TSW profile on load wheels will not damage the tire but increases rolling resistance and may reduce truck speed or efficiency. Always follow your truck manufacturers recommendation for tire placement.
Q: What should I inspect if the SU 13X4.5X8-TSW-EZ causes wheel slip during lifting?
A: First, verify the tire is properly seated on the hub taper with no gaps or movement. A loose tire reduces grip immediately. Second, clean the tire contact surface and floor to remove oil, debris, or moisture that reduces traction. Third, check hub alignment; a bent hub or misaligned axle can prevent full tire contact. Finally, test tire pressure if the tire has an inner tube (some variants do). Low pressure reduces the contact patch and grip.
Q: How often should I inspect the SU 13X4.5X8-TSW-EZ for wear or damage?
A: Inspect drive wheel tires weekly during high-use operations. Look for sidewall cracks, edge tears, or delamination (separation of the steel core from polyurethane). Press the TSW tread pattern to feel for hardening; if the tire feels rock-hard and cracks appear when flexed, replacement is imminent. Polyurethane tires do not wear down like rubber but degrade from UV, ozone, and thermal cycling. Indoor climate-controlled warehouses extend lifespan to 3-4 years.
Q: What is the difference between the SU 13X4.5X8-TSW-EZ and the SU 13X4.5X8-SC-XL?
A: The SU 13X4.5X8-TSW-EZ has a Traction Smooth Wide drive profile made from polyurethane elastomer with a steel core, optimized for powered axles. The SU 13X4.5X8-SC-XL has a smooth crown profile made from Cushothane XL 97A, a harder durometer compound suited for load wheels and standard applications. Both are 13x4.5x8, but profile and material differ. Do not confuse part numbers; verify the correct profile for your truck configuration.
