(2) All Terrain Tire Assemblies 18x9.50-8 Fits Toro Timecutter 50" 139-5847

What It Is

These are two all-terrain tire assemblies (18x9.50-8) designed for the Toro Timecutter 50" zero-turn mower. They replace the OEM part number 139-5847 and provide improved traction on uneven or soft ground compared to standard turf tires.

Fitment & Compatibility

• Primary fit: Toro Timecutter 50" models (e.g., 74750, 74751, 75750) that originally use part 139-5847.
• Check your model number on the mower’s frame or under the seat – not all Timecutters use this size. The 42" and 54" decks often take different tires.
• Measurements: Tire size is 18x9.50-8 (18" outer diameter, 9.5" wide, 8" rim). Verify your existing tire sidewall matches these numbers.
• OEM vs aftermarket: These are genuine Toro assemblies, so bolt pattern and offset are guaranteed to match. Aftermarket alternatives exist but may vary in tread depth or load rating.
• What to verify: Ensure your wheels use a 4-bolt pattern (common on Toro ZTRs) and that the axle size matches. No hub modifications are required for direct replacement.

Key Things to Know

• Quality concern: 3.3/5 rating with only 2 reviews – limited feedback means you’re relying on Toro’s brand reputation. Some users report faster tread wear on pavement compared to turf tires.
• Installation difficulty: Easy – just lift the mower, remove the old wheel nuts, swap assemblies, and torque to spec (~60-70 ft-lbs). No dismounting or tire machine needed.
• Common gotchas: The 18" diameter is slightly taller than some stock tires – check clearance under your fenders or deck. Also, all-terrain tread may leave light marks on manicured lawns if driven aggressively.
• Weight: These are heavier than standard tires, which can marginally affect fuel economy and top speed on flat ground.

Should You Buy It

Buy these if you mow on hilly, muddy, or rough terrain and need better grip than standard turf tires – the tread pattern delivers noticeably. Skip them if you only mow flat, well-kept lawns, as the ride will be rougher and traction overkill. For the price, consider aftermarket alternatives with more user reviews if budget is tight.