How Much Does A Big Tractor Tire Cost? | Price Ranges By Size

A new large farm tire usually costs about $900 to $7,500, while used ones can land between roughly $250 and $2,500.

Most people want one clean number. Big tractor tires do not work that way. A large rear farm tire can be a mid-range replacement on an older row-crop tractor, or it can be a heavy radial built for a high-horsepower machine that spends long days in the field and long miles on the road.

That is why the spread is wide. In plain terms, a new big tractor tire often falls somewhere between $900 and $7,500 per tire. Used tires can cost far less, but tread depth, sidewall cracks, past repairs, brand, and age can swing the price fast. If you are buying for a working tractor, the smarter question is not just “what does the tire cost?” It is “what will the full swap cost me by the time the tractor is back in the field?”

How Much Does A Big Tractor Tire Cost? Price By Size And Build

“Big” usually means a rear agricultural tire, not a smaller front rib tire. Think of sizes such as 18.4R38, 20.8R38, 520/85R38, 650/65R38, or 710/70R38. Once you get into that class, price starts climbing with each jump in width, load rating, and construction.

Bias tires sit at the lower end of the price spread. Standard radials cost more. IF and VF radials, which are built to carry load at lower pressure, sit near the top. Brand also matters. Premium lines from Firestone, Michelin, Trelleborg, or BKT will often sit above entry-level imports, even when the size printed on the sidewall looks close.

What Counts As A Big Tractor Tire

On older tractors, a big rear tire might be an 18.4-34 or 18.4-38. On newer row-crop and mixed-use machines, the “big” class often starts around 480/80R42 and runs into 650/65R38 or 710/70R42 territory. A combine, sprayer, or four-wheel-drive tractor can jump past that.

The size code tells part of the story, but not the full story. Two tires with a similar rim diameter can carry different loads, run at different pressures, and sell at wildly different prices. That is why size alone never gives a clean quote.

Why One Tire Costs Four Times More Than Another

Four things push the bill around more than anything else:

• Construction: Bias is cheaper. Radial costs more. IF and VF radial cost more again.
• Load rating: A tire built for a heavier machine or more road work will carry a bigger price tag.
• Tread and carcass design: Deep-lug R-1W field tires, stubble-resistant casings, and premium compounds all add cost.
• Age and condition: A used tire with strong tread but weather cracks can look cheap and still be a poor buy.

Brand name plays into resale too. A cheaper tire may save cash on day one, yet bring more wheel slip, shorter wear, or a rougher ride. If the tractor earns its keep every week, that trade-off can sting more than the first invoice.

Before you compare two tires by size alone, check the load and pressure data in the Firestone technical databook for agricultural tyres. It shows why two tires that fit the same rim may behave quite differently once speed, load, and inflation enter the picture.

Construction matters too. The Mitas agricultural tires technical manual lays out the bias-versus-radial carcass layout that changes footprint, flex, and road manners. That design shift is one big reason radial farm tires usually cost more.

New Tire Price Ranges For Common Big Sizes

The figures below are practical shopping ranges for one new tire, not mounted, based on the sort of prices farmers commonly run into across mainstream farm-tire sellers. Local quotes can move with freight, crop season, brand choice, and stock levels.

Tire Size Or Class	Typical New Price Per Tire	What Usually Drives The Price
18.4-34 Bias	$900–$1,700	Older tractors, lower-cost build, tube-type setups are common
18.4R38 / 460/85R38	$1,200–$2,800	Popular rear size with a wide split between bias and radial
20.8R38 / 520/85R38	$1,700–$3,600	More rubber, more load, stronger demand on row-crop tractors
18.4R42 / 460/85R42	$1,600–$3,400	Taller casing and higher road-speed options push price up
520/85R42	$2,200–$4,500	Common premium rear fitment on larger row-crop machines
650/65R38 Radial	$2,500–$4,800	Wide footprint, heavier carcass, more premium brand overlap
710/70R38 Radial	$3,400–$6,200	High-horsepower class, bigger freight bill, fewer cheap options
IF/VF 650/65R38 Or Similar	$4,200–$7,500	Higher-tech radial design built for load at lower pressure

If that spread feels large, that is normal. Take 18.4R38 as an easy case. One seller may quote a plain bias tire for an older machine. Another may quote a premium radial with stronger road manners and a higher load index. Same tractor class. Different tire. Different bill.

What Used Big Tractor Tires Usually Cost

Used pricing is less tidy. A worn but usable big rear tractor tire may start around $250 to $600. A clean take-off with solid tread can run $800 to $2,000. Premium used radials in sought-after sizes can go higher, especially if they came off a newer machine and still have sharp bars.

Used can work well when the tractor has light acres left, the machine is headed for sale, or you need a stopgap tire during a busy season. But age matters. A tire with handsome tread and deep sidewall checking may still leave you chasing a service truck at the worst time.

What Pushes The Final Bill Past The Tire Price

The tire itself is only one line on the ticket. Many buyers get caught by the extra work wrapped around the swap. On a loaded rear wheel, labor can turn a decent quote into a stiff one in a hurry.

Common add-ons include mounting, tubes or flaps, fluid service, valve hardware, rim cleanup, field service, freight, and disposal. If the wheel is rusty, bent, or cracked at the bead seat, the bill can jump again. On dual setups, matching tread height and rolling circumference may force you to buy a pair instead of one.

Extra Cost	Typical Add-On	When It Shows Up
Mounting And Install	$80–$250	Shop work on a loose wheel, more on large radial casings
Tube And Flap	$100–$350	Older rims, tube-type tires, or damaged valve areas
Fluid Fill Or Transfer	$150–$600	Ballasted rears with beet juice, calcium, or washer fluid
On-Farm Service Call	$100–$300	When the tractor cannot be hauled to the tire shop
Freight	$150–$700	Large tires ship bulky, and remote areas pay more
Rim Cleanup Or Valve Parts	$25–$150	Rust, leaking stems, or bead-seat cleanup during install
Disposal Fee	$10–$50	Old casings left with the shop

A buyer who sees a $2,800 tire quote may end up paying $3,300 to $3,900 by the time the wheel is handled, loaded, and put back on the tractor. That does not mean the shop is padding the ticket. It means farm tires are heavy, awkward, and time hungry to swap.

When Paying More Makes Sense

Paying more can pencil out when the tractor pulls hard, runs many acres, or spends a fair bit of time on the road. In those cases, a radial often earns its extra cost through better traction, less slip, and slower wear. It can also ride better, which matters more than most people admit after a long day.

There is also the downtime angle. A cheaper casing that fails during planting or harvest can cost more than the price gap you saved at purchase. If the machine is a spare tractor, that risk is easier to live with. If it is the one that must run, the math changes.

What To Ask Before You Buy

Ask these questions before you say yes to any quote:

• Is this price for one tire only, or for tire, tube, mounting, and ballast work?
• Is the tire bias, standard radial, IF, or VF?
• What is the load index and speed rating?
• Will the new tire match the rolling size of the tire on the other side?
• Is the rim in shape for tubeless use, or do you need a tube?
• How old is the casing if the tire is used or a long-held warehouse item?

Those six questions clear up most bad surprises. They also make it easier to compare quotes that look similar on the surface but are not the same once the fine print hits.

A Smart Price Target For Most Buyers

If you just need a working rule of thumb, this is a fair one: budget about $1,200 to $3,500 per tire for a common big rear tractor tire, and leave room above that if you are shopping wide premium radials or IF/VF sizes. Then add service costs before you call the job done.

That gives you a number you can work with, while still leaving space for the real variables that move the bill. Big tractor tires are never cheap, but buying the right casing the first time beats buying the wrong one twice.