Replacing a mower wheel is easier when you treat the stamped tire size as the starting point—not the entire fitment answer. Two wheels can both say 15x6.00-6 and still differ in axle bore, hub length, bearing type, or offset. Those differences can determine whether the wheel installs correctly, rubs the frame, or will not fit the axle at all.
Safety first
Park the mower on a firm, level surface. Shut off the engine, remove the key, set the parking brake, and allow hot components to cool. Chock the wheels that will remain on the ground. If the mower must be raised, follow the manufacturer’s lifting instructions and support it with properly rated stands. Never work beneath equipment supported only by a jack.
What a size such as 15x6.00-6 means
- 15 is the tire’s approximate overall diameter in inches.
- 6.00 is the approximate section width in inches.
- 6 is the rim diameter in inches.
These are nominal dimensions, so actual measurements can vary slightly by tire design, tread, inflation, and manufacturer. The size tells you which tire and rim family you are looking at, but it does not confirm the wheel’s center hardware.
The six fitment details to verify
- Tire size: Match the full size molded into the old tire’s sidewall. Do not rely on overall diameter alone.
- Axle or bore diameter: Measure the mower’s axle and the wheel’s center opening. A small difference matters.
- Hub length: Measure the complete hub from one outside face to the other. A hub that is too long or too short can change spacing and alignment.
- Centered or offset hub: Look at both sides of the wheel. Some hubs are centered; others extend farther on one side. Record which side faces the mower.
- Bearing, bushing, or keyed hub: Front caster wheels often use bearings or bushings. Drive wheels may use a keyed hub, splines, lug holes, or another drive connection.
- Application details: Confirm front or rear position, tread style, load rating, and whether the listing is for a tire only or a complete tire-and-wheel assembly.
How to measure the old wheel
Before removing anything, take clear photos of both sides and note the mower’s model and serial number. After removal, use a ruler or—preferably—a caliper to measure the axle bore, hub length, and any offset. Record spacer and washer locations in order. If the old wheel has an OEM part number, save it; an OEM number is usually a stronger match than appearance alone.
Tire only or complete assembly?
A tire-only listing is useful when the rim, hub, and bearings are still serviceable. A complete assembly can save installation time when the rim is bent, the hub is worn, or the bearings are damaged. Read the listing carefully: a product photo may show a mounted assembly even when the specifications control exactly what is included.
Common ordering mistakes
- Matching only the sidewall size and overlooking the axle bore.
- Assuming every wheel with yellow, gray, or white paint has the same hub.
- Confusing a smooth bushing with a ball-bearing hub.
- Measuring only the exposed part of the axle instead of the wheel’s actual hub.
- Ordering by mower brand alone when one model family uses several wheel configurations.
Before you order
Compare the mower model, serial range, OEM part number, tire size, bore, hub length, and hub style against the product description. If one measurement is missing, pause and verify it rather than assuming.
Browse lawn mower tire and wheel assemblies, replacement mower wheels, or lawn mower tires. For more help gathering the right information, use our Find the Right Mower Part guide.
MowForge fitment reminder: Appearance is not proof of compatibility. Match the equipment model and serial range plus the listed measurements or OEM number before purchasing.