If you need an 18.4-42 tractor tire, verify the exact tire size before buying: the listings below include two inner tubes that list 18.4-42 compatibility, but none of the five products is an 18.4-42 tire. The tire options are 18.4-38 and 18.4-30, so they are not substitutes for a 42-inch tire. The tube listings are best for buyers seeking a replacement tube, while the other products suit buyers shopping for different tire sizes.
| Product | Listed size or fit | Best suited for |
|---|---|---|
| Premium Service inner tube | Includes 18.4-42 among listed sizes | Replacement tube buyers |
| Farm Tractor inner tube | Includes 18.4-42 among listed sizes | Buyers comparing a second tube listing |
| JUSTUBES.COM tire set | 18.4-38 | Buyers needing a tire-and-tube set in 38-inch size |
| Carlisle CSL24 tire | 18.4-38 | Buyers seeking a single 38-inch tire |
| JUSTUBES.COM tire pair | 18.4-30 | Buyers needing a 30-inch tire pair |
Premium Service 18.4-42 Inner Tube
Best for: Buyers who need an inner tube for a tire marked 18.4-42 or one of the other sizes listed by the seller. The product description identifies a TR218A valve stem and says the tube is intended for radial or bias farm tractor tires.
The seller describes it as heavy-duty and made with high-quality rubber. Its stated stretch-to-fit design covers several tire sizes, including 18.4R42, 20.8-42, and other 42-inch options. It is a tube, not a tire, so choose it only when replacing an inner tube rather than a complete tire.
Check before ordering: Confirm the tire’s full size and valve-stem requirements. A broad listed fit does not replace checking the specifications for your wheel and tire.
Farm Tractor 18.4-42 Inner Tube
Best for: Tractor owners comparing replacement tube options for an 18.4-42 tire. This listing also names 18.4R42 and several other sizes, and specifies a TR218A valve stem.
Its listed features match the other 18.4-42 tube option: heavy-duty agricultural use, rubber construction, and fitment for radial or bias tires. The product is useful when a tube is needed, but it does not include a tire. Compare the seller’s fitment details with the existing tire marking rather than relying only on the general size range.
Limitation: The provided product details do not specify a package quantity or additional fitment measurements. Confirm those details with the listing before purchase.
JUSTUBES.COM 18.4-38 Tire Set
Best for: Buyers who need two agricultural tires in 18.4-38 size, rather than 18.4-42. The package is described as two R1-pattern tires plus two matching tubes. The listed 10-ply rating and agricultural tread make this the tire-and-tube set among these options.
The R1 tread is intended for agricultural traction, and the stated ply rating indicates the construction specification provided by the seller. It may suit a buyer replacing a pair in the listed size and wanting tubes included.
Limitation: This is a 38-inch tire size, not 42-inch. Do not choose it as a size substitute without confirming the required fitment for the tractor.
Carlisle CSL24 R-1 18.4-38 Tire
Best for: Buyers seeking a single 18.4-38 tire with an R-1 agricultural tread. The listed features include an angled tread for traction and long life, plus a cut- and chip-resistant tread design for tractors, sprayers, and harvesters.
This option is distinct from the JUSTUBES.COM set because the listing identifies an individual tire rather than a two-tire package with tubes. Its stated 10-ply specification and intended equipment uses help buyers compare it with other 18.4-38 options.
Limitation: It is not an 18.4-42 tire. The provided details do not say that a tube is included.
JUSTUBES.COM 18.4-30 Tire Pair
Best for: Buyers who need two 18.4-30 R1 lug-bar tires. The listing describes a heavy-duty tubeless design with a 10-ply rating and standard 18.4×30 dimensions for compatible tractors and agricultural equipment.
The tubeless construction and pair quantity are useful distinctions when comparing this product with the 18.4-38 tire-and-tube set. Choose it only when 18.4-30 is the required size and the equipment is suited to the listed fitment.
Limitation: The product is 12 inches smaller in rim diameter than an 18.4-42 listing; it is not a replacement for a 42-inch tire.
Buying Guide: Choosing an 18.4-42 Tire or Tube
Is this listing for a complete tire or an inner tube?
Check the product name and contents. The two listings that include 18.4-42 are inner tubes, not complete tires. The tire listings are 18.4-38 or 18.4-30. If you need a complete 18.4-42 tire, these products do not meet that requirement.
How should you confirm the size?
Read the size printed on the existing tire and compare it with the equipment requirements. The listings use several related markings, including 18.4-42 and 18.4R42. Do not assume that a tire with a different rim diameter will fit simply because its width number is similar.
What do tread, ply rating, and construction tell you?
R1 refers to the agricultural tread pattern named in the tire listings. The 10-ply rating is a listed construction specification, not a guarantee that the product fits a particular tractor. Also compare whether the tire is tubeless or supplied with tubes, and verify that the wheel setup matches the product.
Frequently Asked Questions
Are any listed tires 18.4-42?
No. The tire products shown are 18.4-38 and 18.4-30. The two products listing 18.4-42 are inner tubes.
Will an 18.4-38 tire fit where an 18.4-42 tire is required?
Do not assume so. These are different listed tire sizes. Confirm the required size and fitment for the tractor before buying.
Do the 18.4-42 tube listings include tires?
No. Their product names and descriptions identify inner tubes. They are not complete tire assemblies.
What does TR218A identify in the tube listings?
TR218A is the valve-stem type specified by both 18.4-42 tube listings. Check that the stated valve stem suits your wheel setup.
Which listed tire set includes tubes?
The JUSTUBES.COM 18.4-38 set is described as including two tires and two matching tubes. It is not an 18.4-42 set.