Zero-turn mower tires with no air to lose.

Compatibility depends on your mower's exact model and the specifications of the Tweel assembly. Check the manufacturer's fitment guidance and confirm the required bolt pattern, offset, load capacity, installation hardware and available clearance. Matching the bolt pattern and offset alone does not establish compatibility. The finder above and Farm & Trail (877-203-4939) can help you check.

No. Michelin describes the Tweel as a single unit that replaces the current tire, wheel and valve assembly. You unbolt the old assembly and bolt the Tweel on.

Check OTR's NDX chart by brand and model in the NDX section above, note the size, then choose the version that matches your hub's bolt pattern and offset. NDX covers rear drive positions only, and OTR notes its fitment guide is being updated, so confirm before ordering.

Michelin Tweel and OTR NDX assemblies are generally sold individually unless the product listing states otherwise. Replacing both rear-drive assemblies may be appropriate to maintain matched dimensions and handling. Follow your mower manufacturer's requirements and the tire manufacturer's guidance on paired replacement, load ratings and allowable height differences (Michelin suggests no more than 3% difference in height between Tweels on the same axle).

Yes. Casters and rear drive tires are separate positions with separate part numbers in Michelin's fitment guide. Tweel casters come for 5/8" or 3/4" axle bolts, and some forks need a spacer bushing.

Contact Farm & Trail before installing or modifying the product. Returns are subject to Farm & Trail's return policy and any product-specific restrictions; return eligibility, shipping costs and possible restocking or administrative charges depend on the circumstances, and returns for incorrect fitment are generally at the buyer's expense. Manufacturer satisfaction programs or warranty terms shouldn't be assumed to override Farm & Trail's return procedures. The best approach is to verify fitment before ordering.

For Tweel-compatible vehicles, Michelin lists "better ride than pneumatics," lower vertical stiffness and better side-hill stability among the Tweel's potential advantages. Ride feel varies by machine and terrain.

Michelin says ambient temperature doesn't affect performance: the polyurethane is very stable across temperatures and has shown robust performance from -30°F to 100°F.

Michelin says a flat spot could potentially occur after extended storage, and that it dissipates after riding about 100 yards.

Yes. Follow Michelin's current installation instructions and your mower manufacturer's service manual for lug-nut type, torque, tightening sequence and re-torque intervals; manufacturer instructions take precedence over this site. Michelin's FAQ also recommends leveling the mower deck after installation and checking it again after about the first month.

Inspect the assembly regularly for cracked, cut, separated or otherwise damaged components. If you find damage, stop using the mower until the assembly has been assessed under Michelin's current service guidelines or by a qualified technician. Don't cut, drill, repair or modify structural spokes based on information from this website. Michelin's warranty excludes impact and cut damage.

Michelin says service life varies by application, and that on average small Turf Tweels last 2 to 3 times longer than their pneumatic counterparts. Michelin doesn't apply the 10-year service-life limit it uses for passenger tires; monitor condition instead.

Michelin says the Tweel's consistent hub height helps the deck produce an even cut. Level the deck after installing, since a new tire's height can differ from the worn tire it replaces.

Michelin lists a 24x12N12 Tweel at 47.7 to 49.4 lb. OTR lists a 24x12.00-14 NDX at 43.1 lb and says NDX weighs about 25% more than a pneumatic tire of the same size.

The NDX is an airless tire with sidewalls on a steel wheel, sold as one assembly. OTR says its patent-pending design combines multi-layered fabric construction, engineered structural supports and a tread belt with a deflection management system. It covers rear drive positions; the Tweel line also covers front casters.

Actual tread life depends on operating hours, machine weight, surface conditions, driving habits and maintenance, so there's no guaranteed service life. OTR publishes comparative durability claims for NDX (that it lasts up to 2 times longer than other airless options); those are manufacturer-reported statements, summarized in the NDX section above. See OTR's current literature and warranty for details.

Yes. OTR's NDX warranty covers defects in materials and workmanship for 3 years from purchase, ending when tread reaches 4/32". It excludes road and field hazards, cuts, punctures, overloading and use above the maximum speed.

Yes. OTR's data sheets list a 20 mph maximum speed and maximum loads of 740 lb (24x12.00-14) and 880 lb (26x12.00-16). Michelin says each Tweel has its own maximum speed and load rating; check your mower's specifications.

OTR describes the Grass Master tread as a turf-friendly "S" pattern for traction with gentle ground contact, and says the NDX rides comparable to, if not better than, a pneumatic tire.

Grass Master is offered in every NDX size Farm & Trail lists. Zero T II is offered in select 23x10.50-14 and 24x9.50-14 hub options. Ask Farm & Trail which suits your ground.