18.4-24 Tractor Tires

Buying 18.4-24 tractor tires

18.4-24 is a wide, low rear tire for utility tractors, tractor loaders and some backhoes. The 24-inch rim keeps the machine low and stable with a loaded bucket, while the 18.4-inch width gives flotation and pull. It is also made with R-4 industrial tread for loader and yard work. It is about 18.4 inches (467 mm) wide on a 24-inch wheel.

Tell us whether you need R-1 farm lugs for soil or R-4 industrial tread for hard ground. Narrower tires on the same rim include 16.9-24 and 14.9-24.

Easy to confuse

• 18.4-24, 18.4-26, 18.4-28 and 18.4-30 share the same width but fit different wheels. Read the rim size on the sidewall.

What to check

• Tread: R-1 is the standard farm lug; ask about R-1W for wet ground and longer wear.
• Ply rating: match or exceed your current tires, especially if the tractor runs a loader or heavy three-point implements.
• Tube or tubeless: tell us what you run now, and whether the tires are filled with liquid ballast.
• Front-wheel-assist tractors: changing the rear size or construction changes the front-to-rear ratio. Check it before you order.
• Used tires: ask for the tread depth, the date code and photos of both sidewalls, and look for weather cracks.
• Pairs: replace both rears together so the tractor pulls straight.

Send the quantity, new or used, and the delivery location for a quote. More rear sizes are on our tractor tires page.

What do 18.4-24 tires cost on our site?

This size is not on a model listing yet. Send us the size and we check what we can supply.

How tall is the 18.4-24 tire?

The nominal overall diameter is about 55.3 in (1,404 mm), which gives a rolling circumference near 174 in (4,411 mm). That figure is an estimate that assumes an 85% aspect ratio, the usual rule for old inch sizes. Real tires vary by make and load, so treat it as a guide and use the tire diameter calculator or the lead-lag calculator before you change size on a front-wheel-assist tractor.

Is 18.4-24 a radial or a bias tire?

It is a bias-ply size. The dash in the size marks bias construction, which costs less and has stiffer sidewalls. See the radial vs bias guide.