Exmark 142-5509 Rib Tire ZS4230 ZS4630 ZS5260 ZS5260XL Stand On Sprayers

What It Is

The Exmark 142-5509 is a genuine OEM rib tire designed for the front caster position on Exmark ZS4230, ZS4630, ZS5260, and ZS5260XL zero-turn mowers, as well as Exmark stand-on sprayers. It provides traction and flotation on turf, reducing scuffing while supporting the machine’s front end.

Fitment & Compatibility

Before buying, confirm your machine is one of these models: ZS4230, ZS4630, ZS5260, ZS5260XL, or an Exmark stand-on sprayer. The tire size is 13x5.00-6, with a 4-inch center hole and a 3/4-inch bearing bore. Measure your existing tire’s diameter (13 inches), width (5 inches), rim diameter (6 inches), and axle hole size. This is an OEM part, not aftermarket, so it matches factory specs exactly. If your mower uses a different bearing or spindle, it may not fit.

Key Things to Know

• Quality: Genuine Exmark rubber with a ribbed tread pattern for low turf damage. The single review (3.0/5) suggests possible quality inconsistency, but OEM parts typically hold up well.
• Installation: Easy swap—remove cotter pin and washer, slide old tire off, and install the new one. No special tools needed, but check bearings for wear.
• Gotchas: Verify your machine’s year; older models may use a different bearing setup. The 3/4-inch bore is standard, but measure to avoid returns. Tire is sold individually, not as a pair.
• Price: At $137.99, it’s premium for a single tire—aftermarket options are cheaper but may not fit as precisely.

Should You Buy It

Buy this if you need an exact OEM replacement for your Exmark ZS-series zero-turn or stand-on sprayer and want guaranteed fit without modification. Skip it if you’re on a budget—aftermarket 13x5.00-6 rib tires cost roughly half and work on most standard hubs, but check your bearing bore first. For a quick, no-hassle fix on a commercial machine, this is the right choice.