13.6-36 Tractor Tires

Buying 13.6-36 tractor tires

13.6-36 is a tall, narrow rear tire for row-crop tractors, found mostly on older machines. The narrow width runs between rows and the 36-inch rim gives crop clearance. It is less common today than 38-inch sizes, so it pays to check the exact size before ordering. It is about 13.6 inches (345 mm) wide on a 36-inch wheel.

Most tires in this size are bias R-1. Tell us if you want to look at radial options or a move to a more common size such as 13.6-38 or 14.9-38, which needs different wheels.

Easy to confuse

• 13.6-36 vs 13.6-38: same width, different rim. Read the last number on the sidewall; worn sidewalls on older tractors are easy to misread.
• 13.6-36 vs 14.9-38: a common upgrade on older tractors, but it needs 38-inch wheels.

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 13.6-36 tires cost on our site?

We list 3 models in 13.6-36. 3 have a listed price, from $726 (Alliance 324 FarmPRO) to $1,400 (Cultor AS-Agri 13) per tire, with a median of $1,246. Prices are per tire in US dollars and change with stock and season.

How tall is the 13.6-36 tire?

The nominal overall diameter is about 59.1 in (1,502 mm), which gives a rolling circumference near 186 in (4,718 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 13.6-36 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.