13.6-30 Tractor Tires

Buying 13.6-30 tractor tires

13.6-30 is a rear tire for row-crop and utility tractors, found on many older machines used for hay, feeding and row crops. It sits between the narrower 12.4-30 and the wider 14.9-30 on the same rim. It is about 13.6 inches (345 mm) wide on a 30-inch wheel.

A radial version, 13.6R30, is also made. Most tractors in this size run bias R-1, which costs less and suits moderate hours.

Easy to confuse

• 13.6-28, 13.6-30 and 13.6-36 share the same width but fit different wheels.
• 12.4-30 and 14.9-30 fit the same 30-inch rim but are narrower and wider. Changing width needs the right rim and clearance.

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 13.6-30 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 13.6-30 tire?

The nominal overall diameter is about 53.1 in (1,349 mm), which gives a rolling circumference near 167 in (4,239 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 13.6-30 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.