NoAir® (2) Flat Free Tire Assemblies 15x6.00-6 Fits Kubota ZD321 ZD323 ZD326 K3181-18032

What It Is

These NoAir® flat-free tire assemblies (15x6.00-6) are solid, airless tires designed for zero-turn mowers, specifically Kubota ZD321, ZD323, and ZD326 models. They eliminate punctures and air pressure maintenance, ideal for commercial or rough-terrain mowing where downtime is costly.

Fitment & Compatibility

Before buying, verify your mower’s model number (ZD321, ZD323, or ZD326) and check the OEM part number K3181-18032. Measure your current tire size: 15x6.00-6 (15-inch outer diameter, 6-inch width, 6-inch rim). These assemblies are direct replacements for the original Kubota tires on the front caster wheels. Ensure your rim bolt pattern matches (typically 4 on 4-inch centers for Kubota ZD series). If your mower has a different deck size or model variant (e.g., ZD331), confirm compatibility with Kubota’s parts diagram or measure wheel hub spacing.

Key Things to Know

• No maintenance required: No air pressure checks, no flats, no patching—but they are heavier and can stiffen the ride on bumpy ground.
• Installation is straightforward: Remove the old tire/wheel assembly, slide on the new one, and secure with the existing hardware. No special tools needed.
• Durability vs. ride comfort: These are solid rubber, so they last much longer than pneumatic tires but transmit more vibration. Not ideal for delicate turf or very uneven surfaces.
• Weight difference: Each assembly weighs about 8-10 lbs more than a standard pneumatic tire, which can slightly affect steering effort on steep slopes.

Should You Buy It

Buy these if you mow commercially, deal with frequent flats from thorns or debris, or want zero maintenance on your front tires. Skip them if you prioritize a smooth ride on manicured lawns or need to keep weight low for hillside stability.