What size are the rear tires on a Ford 8N tractor?
Rear tires on the Ford 8N are typically 28 inches in diameter, with the original equipment size most commonly being 11.00-28.
Produced from 1947 through 1952, the 8N used a 28-inch rear wheel as part of its standard layout. While 11.00-28 was the classic stock choice, many owners have upgraded to wider 12.00-28 tires for improved traction and versatility. The exact size on a given tractor depends on the rims installed and the tires chosen, so checking the sidewall markings or the manual is the best way to confirm for a specific machine.
Common rear tire sizes on the Ford 8N
To illustrate typical configurations you’re likely to encounter, here are the sizes most often found on 8Ns today:
- 11.00-28 — the original-equipment rear tire size for many Ford 8N tractors; uses 28-inch rims and about an 11-inch cross-section.
- 12.00-28 — a wider option frequently installed to improve traction and stability on various terrains, still using 28-inch rims.
Note: Actual sizes can vary by tire manufacturer and rim width. Always read the sidewall markings and verify with the tractor’s manual or a trusted dealer before purchasing replacements.
How to confirm your tractor’s rear tire size
Accurate sizing prevents mismatches and ensures proper performance. Here’s how to verify yours:
Reading the tire sidewall
Look for markings such as 11.00-28 or 12.00-28; the first number represents the cross-section width in inches, the second the wheel diameter in inches.
Measuring the rim
If the sidewall is unreadable, measure the rim diameter to confirm it is 28 inches. While 28-inch rims are standard on most 8Ns, some restorations use different widths if wider rims were installed.
Consulting documentation
When in doubt, check the tractor’s year and serial number against the official Ford manuals or contact Ford N-series clubs and reputable parts suppliers who can confirm the original specification for your exact machine.
Summary
The Ford 8N’s rear tires most commonly come in a 28-inch diameter, with 11.00-28 as the standard original size and 12.00-28 as a popular upgrade. Always verify by checking the tire sidewall or consulting the manual or a knowledgeable dealer to match your rims and intended use.
