13.6-28 Tractor Tires

Buying 13.6-28 tractor tires

13.6-28 is a rear size for smaller utility and row-crop tractors. It is about 13.6 inches (345 mm) wide on a 28-inch wheel, narrow enough to run between crop rows and light enough for everyday chores. You will find it on many older utility tractors that are still in daily use.

For radial, the matching sizes are 13.6R28 and 340/85R28. Most buyers in this size stay with bias R-1, which is the economical choice for a tractor with modest yearly hours.

Similar sizes that are easy to mix up

• 13.6-28 vs 13.6-38: same width, different rim. Always read the last number on the sidewall.
• 13.6-28 vs 14.9-28: same rim, 14.9 is wider and taller. Moving up needs rim, clearance and row-spacing checks.

What to check

• Tread: R-1 for field work. If the tractor is mostly on turf, ask about an R-3 turf tire instead.
• Ply rating: 6-ply is common for light work; go higher if you run a loader.
• Used tires: ask for the tread remaining, the date code and photos showing any cracking between the lugs.
• Pairs: replace both rears together for even pulling.

Send the quantity, new or used, and the delivery location, and we will send prices with shipping.

What else is 13.6-28 called?

The same tire is written 13.6-28, 13.6×28, 13.6/28 or 13.6 28: a bias-ply tire 13.6 in (345 mm) wide for a 28 in (711 mm) rim. The radial version is 13.6R28, and the usual metric radial match is 340/85R28. It is sold in R-1 farm tread and also in R-3 turf tread.

How does 13.6-28 compare with other 28 in rim sizes?

Nominal figures use the standard size formula with an 85% aspect ratio for old inch sizes. A real tire lands close: Carlstar publishes its 8-ply Farm Spec in 13.6-28 at 51.6 in overall diameter, 3,640 lb (1,651 kg) load capacity, 125 lb (57 kg) weight and 29 psi maximum on a 12 in wide rim. That is one maker’s tire, not the size, so use your tire’s own data sheet for load and pressure.

Can you swap 13.6-28 for another size?

Only with care. A different width changes height, so ground speed and front-to-rear ratio change too. Keep both rears identical and run the numbers in the lead-lag calculator before you order.

What do 13.6-28 tires cost on our site?

We list 11 models in 13.6-28. 10 have a listed price, from $320 (Petlas TA60) to $3,500 (Goodyear Dyna Torque II) per tire, with a median of $657. Prices are per tire in US dollars and change with stock and season.

How tall is the 13.6-28 tire?

The nominal overall diameter is about 51.1 in (1,298 mm), which gives a rolling circumference near 161 in (4,079 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 13.6-28 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.