Product Description
RUBBER NON MARKING TIRE
Specifications: 18.000 inch diameter x 8.000 inch width (18.000" x 8.000" | 18 x 8.00 wheel | 457.20mm x 203.20mm)
Specifications
Wheel Specifications
| Outside Diameter (in) | 18.000 |
| Width (in) | 8.000 |
| Outside Diameter (mm) | 457.20 |
| Width (mm) | 203.20 |
| Drive Tire Profile | Smooth Flat |
Frequently Asked Questions
Q: What does NMR stand for and why would I choose a non-marking tire?
A: NMR stands for Non-Marking Rubber. This tire is specifically formulated to not leave black scuff marks on polished floors, cleanroom surfaces, or food-grade environments. The 18 inch OD and 8 inch width provide wider contact patch than 6 inch width tires, improving load distribution and reducing rolling resistance. Non-marking rubber is essential in hospitals, pharmaceutical facilities, grocery stores, and any location where floor appearance must be maintained. Trade-off is higher cost versus standard rubber.
Q: Is the 18X8X12.12 wider than 18X6 tires and does it fit my jack?
A: Yes, SU 18X8X12.12-SF-NMR is 8 inches wide versus 6 inches on standard tires. Wider tires require wider wheel rims and a wider axle assembly. Do not attempt to force an 8 inch tire onto a 6 inch wheel rim; it will not seat properly and creates a safety hazard. Measure your jack axle width and rim width before ordering. If your jack supports 6 inch tires only, you cannot upgrade to 8 inch without replacing the entire wheel assembly (rim, bearings, and axle shims).
Q: What is the load capacity of the 18X8 non-marking tire and is it higher than 18X6?
A: SU 18X8X12.12-SF-NMR carries up to 1800 lbs per wheel (versus 1500 lbs for 18x6 tires). The wider footprint spreads load more evenly, reducing contact pressure and improving stability on uneven floors. However, your jack frame and hydraulic system must be rated for the higher load. If your jack is a 4000 lb capacity unit, upgrade to 18x8 wheels to improve weight distribution. If your jack is rated for 2500 lbs, an 18x8 wheel does not increase total capacity; it just reduces tire pressure and wear.
Q: Does the SU 18X8X12.12-SF-NMR non-marking formula affect traction or wear life?
A: Non-marking rubber has lower traction than standard rubber due to its proprietary compound (often silica-based to prevent carbon transfer). On smooth, dry floors it performs well. On wet or textured surfaces, grip is noticeably less. Wear life is comparable to standard rubber (18-36 months), but the softer compound of non-marking tires wears faster under heavy load or frequent steering. Inspect every 300 hours for cracking or flat spots. Do not use non-marking tires on outdoor ramps or slippery surfaces.
Q: How do I install an 18X8 wider tire and what tools are needed?
A: Installation requires a tire press rated for wider tires (18x8 tires are heavier and stiffer than 18x6). Use a press set to 3-5 tons of force to avoid tire damage. Manual hammer-on method is not recommended for 8 inch tires due to risk of uneven seating. Ensure your jack is in a stable position on a level surface before tire installation. The 12.12mm bore fits standard 12mm hubs. After installation, visually inspect the entire tire-to-rim interface for gaps or misalignment.
Q: Is SU 18X8X12.12-SF-NMR suitable for cleanroom or food facility environments?
A: Yes, non-marking rubber is specifically designed for cleanroom, hospital, and food-grade environments where black scuff marks are unacceptable. The smooth flat profile ensures clean floor contact without tracking residue. Verify your facility compliance standards (FDA, ISO 14644, or local health codes) for material compatibility. Non-marking tires may require periodic cleaning with mild detergent to maintain efficacy. Do not use harsh solvents or abrasive cleaners on the tire; they degrade the non-marking compound.
