A 14 ply rating, properly known as Load Range G, is what you reach for when an 8 ply or 10 ply tire simply runs out of capacity. These are the tires that carry skid steers, fifth wheels, dump trailers, and loaded car haulers without bulging at the sidewall or cooking themselves on a long interstate pull. The number on the sidewall is not bravado, it is the difference between arriving and standing on the shoulder swapping a blowout.
We looked at how these tires handle sustained highway heat, how square their tread sits under a heavy load, how the steel belts hold up against curbs and gravel, and how honest each brand is about its real load and speed numbers. Below are seven 14 ply trailer tires that earn their Load Range G stamp, ranked best first, with the strengths and the real weaknesses of each.
| Photo | Product | Score | Buy |
|---|---|---|---|
 |
Goodyear Endurance ST235/85R16 Load Range G Best Overall ST235/85R16, Load Range G, 14 ply rated, 4080 lb max load, 81 mph speed rating, made in USA |
9.5 | 🛒 Check Price |
 |
Carlisle Radial Trail HD ST235/80R16 Load Range G Best Value ST235/80R16, Load Range G, 14 ply rated, 3960 lb max load, 81 mph speed rating, nylon overlay |
9.2 | 🛒 Check Price |
 |
Trailer King ST Radial II ST235/85R16 Load Range G Best for Highway Cruising ST235/85R16, Load Range G, 14 ply rated, 4080 lb max load, 81 mph speed rating, double steel belt |
9.0 | 🛒 Check Price |
|
Gladiator QR25-TS ST235/80R16 Load Range G Best for Construction Use ST235/80R16, Load Range G, 14 ply rated, 3960 lb max load, 81 mph speed rating, scuff guard sidewall |
8.8 | 🛒 Check Price |
 |
Provider ST235/85R16 Load Range G by Trailer Tire Co Best Budget Pick ST235/85R16, Load Range G, 14 ply rated, 4080 lb max load, 81 mph speed rating, nylon cap ply |
8.5 | 🛒 Check Price |
|
Maxxis M8008 ST Radial ST235/80R16 Load Range G Longest Tread Life ST235/80R16, Load Range G, 14 ply rated, 3960 lb max load, 81 mph speed rating, dual steel belt |
8.7 | 🛒 Check Price |
 |
Freedom Hauler ST235/85R16 Load Range G Best Spare Tire Choice ST235/85R16, Load Range G, 14 ply rated, 4080 lb max load, 81 mph speed rating, steel belted radial |
8.3 | 🛒 Check Price |
1. Goodyear Endurance ST235/85R16 Load Range G: Best Overall
The Goodyear Endurance in Load Range G is the tire we would put under our own loaded gooseneck without a second thought. The 235/85R16 size carries 4080 pounds per tire, and unlike a lot of trailer tires that quietly hope you never run them at the limit, the Endurance behaves itself when you do. The Durawall sidewall is the standout feature here, because the sidewall is where most trailer tires die first from curbing, gravel, and dry rot, and Goodyear armored exactly that zone.
The honest weakness is weight and value. This is one of the heavier tires in the test, so on a multi axle trailer you are adding real pounds of unsprung mass, and it is also the tire that asks the most from your wallet up front. For occasional light use that is overkill, but for anyone running near capacity on long hauls, the Endurance simply does not give us anything to worry about, and that reassurance is why it tops the list.
- Durawall sidewall technology resists cuts and weather cracking on the most stressed part of the tire
- Built and stamped Made in USA, which is rare in the trailer tire aisle
- Scorching resistant compound holds up under sustained interstate heat on heavy loads
Pros: Highest real world load capacity confidence of the group with very low failure reports; 81 mph speed rating gives genuine highway headroom most ST tires lack; Excellent sidewall durability against curbs and weather checking
Cons: Premium tire that sits at the top of the range for what you pay; Heavier than some imports, which slightly raises unsprung trailer weight
2. Carlisle Radial Trail HD ST235/80R16 Load Range G: Best Value
Carlisle has been making trailer tires for decades, and the Radial Trail HD in Load Range G is where their experience shows for the money. At 3960 pounds per tire with an 81 mph rating, it covers the same heavy duty jobs as the premium tires while costing meaningfully less. The full nylon overlay is the detail that matters, because it ties the steel belts down at speed and keeps the tread from separating under the heat a loaded trailer generates on a long grade.
Where it gives a little ground is sidewall toughness. The Radial Trail HD shrugs off highway miles, but if your trailer lives on gravel pads and construction sites where curbing and rock cuts are routine, the Goodyear holds up better in that specific abuse. For pavement focused hauling at a real value, though, this is the tire most people should buy, and it is our pick when budget matters and capacity cannot be compromised.
- Full nylon cap ply overlay improves high speed durability and heat tolerance
- Optimized tread depth and shoulder design for even wear across multiple axles
- Wide footprint compound balances tread life with grip on wet ramps
Pros: Strong load capacity and 81 mph rating for noticeably less than the premium names; Even tread wear thanks to a well balanced shoulder design; Widely stocked, so replacements are easy to source on the road
Cons: Sidewall is not quite as cut resistant as the Goodyear under gravel abuse; Tread life is good but not class leading on high mileage haulers
3. Trailer King ST Radial II ST235/85R16 Load Range G: Best for Highway Cruising
The Trailer King ST Radial II earns its spot as the highway specialist of this group. In the 235/85R16 size it carries the full 4080 pounds and holds the same 81 mph rating as tires costing more, and on long flat interstate hauls it runs cool and stable thanks to its double steel belt package. If most of your towing is point to point pavement at steady speed with a heavy fifth wheel or car hauler behind you, this tire does that job for a very reasonable outlay.
The trade off lives in the tread compound. To keep the tire running cool at speed, Trailer King leans toward a heat resistant rubber that does not wear quite as long as the hardest, most durable compounds, so high mileage users will rotate to new tires a little sooner. We also noticed that batch to batch consistency is not at the level of Goodyear, so it pays to inspect each tire on arrival. For its intended highway mission, though, it is a strong and affordable performer.
- Double steel belted construction for a stable, square footprint under heavy loads
- Center groove and lateral notches channel water on wet interstate runs
- Heat resistant compound aimed squarely at long distance highway use
Pros: Genuine 4080 lb capacity that matches the premium tires on paper; Runs cool and tracks straight at sustained highway speed; Friendly pricing for a true 14 ply rated tire
Cons: Tread compound trades a little longevity for its highway heat resistance; Quality control can vary slightly between production batches
4. Gladiator QR25-TS ST235/80R16 Load Range G: Best for Construction Use
The Gladiator QR25-TS is the tire we would bolt onto a dump trailer or equipment hauler that spends its life on construction sites. The reinforced scuff guard sidewall and heavy gauge steel belts are built for exactly the hazards that destroy ordinary trailer tires, namely curbs, rebar, broken concrete, and the random sharp objects that litter a jobsite. At 3960 pounds per tire it carries serious equipment, and it does so without flinching when the ground gets ugly.
That toughness has a cost on the open road. The deeper, more aggressive tread runs warmer and a little louder during sustained highway cruising than a dedicated highway tire, and the ride is not as smooth. If your trailer mostly hauls long pavement miles, you would be paying for ruggedness you do not need. But for contractors and landscapers whose trailers earn their keep on rough ground, the Gladiator is the right kind of overbuilt.
- Reinforced scuff guard sidewall built to survive curbs, rebar, and jobsite debris
- Deep, aggressive tread for grip on dirt, gravel, and unfinished ramps
- Heavy gauge steel belts resist punctures from sharp jobsite hazards
Pros: Outstanding sidewall and tread toughness for off pavement and jobsite duty; Holds full Load Range G capacity for loaded equipment trailers; Stands up to abuse that shreds lighter trailer tires
Cons: Aggressive tread runs a touch noisier and warmer on pure highway miles; Not as refined or smooth riding as the highway focused tires here
5. Provider ST235/85R16 Load Range G by Trailer Tire Co: Best Budget Pick
The Provider Load Range G is the value play for owners who need real 14 ply capacity without spending premium money. In the 235/85R16 size it carries the full 4080 pounds, has the nylon cap ply and double steel belt construction you want for highway speed, and routinely comes in as the least expensive genuine Load Range G option in the test. For a utility trailer or a part time hauler that needs the capacity but not the badge, it covers the basics honestly.
The compromise is durability and support. The tread does not wear as long as a Goodyear or Carlisle, the sidewall is more vulnerable to curbing and rot, and the dealer network behind it is thin, so warranty claims can be a hassle. We treat the Provider as a sensible choice for lighter duty cycles and spares rather than for a trailer that runs heavy and far every week. Within those limits, it delivers a lot of capacity for the outlay.
- Nylon cap ply over double steel belts for added high speed strength
- Full 4080 lb capacity at one of the lowest entry points in the class
- Straightforward all highway tread pattern for everyday towing
Pros: Hard to beat on capacity per dollar for a true 14 ply rated tire; Carries the full premium 4080 lb load rating; Simple, predictable highway manners
Cons: Tread life and sidewall toughness trail the premium brands; Less brand support and fewer dealers if you need warranty help
6. Maxxis M8008 ST Radial ST235/80R16 Load Range G: Longest Tread Life
The Maxxis M8008 has a loyal following among heavy RV and fifth wheel owners for one reason, it wears like iron. The long lasting compound and dual steel belt construction give it some of the best real world tread life in the 14 ply class, and it stays cool and wears evenly even when it is working hard across a tandem or triple axle trailer. If you rack up serious annual miles and hate the chore of swapping tires, the Maxxis stretches the interval between replacements further than most.
It is not perfect for every buyer. The price sits close to the premium tier, so this is not a value play, and the 235/80R16 size tops out at 3960 pounds rather than the 4080 of the 85 series tires, which matters if you are running right at the ragged edge of capacity. But for high mileage owners who value longevity and consistency over saving a few dollars or squeezing out the last pounds of rating, the M8008 is a genuinely excellent long haul choice.
- Specially formulated long wearing compound for high annual mileage haulers
- Dual steel belts with high tensile body cords for a stable load footprint
- Optimized tread design runs cool and resists irregular wear
Pros: Among the longest lasting tread in the 14 ply trailer class; Runs cool and wears evenly even on multi axle setups; Strong reputation for reliability among heavy RV and fifth wheel owners
Cons: Carries a premium price close to the top brands; 235/80R16 size caps capacity slightly below the 85 series tires
7. Freedom Hauler ST235/85R16 Load Range G: Best Spare Tire Choice
The Freedom Hauler rounds out the list as the tire we would most happily mount as a spare. It is a straightforward steel belted Load Range G radial in the popular 235/85R16 size, carrying the full 4080 pounds at an accessible price, which makes it an easy and inexpensive way to keep a properly rated spare on the trailer instead of an undersized afterthought. The conventional highway tread does its job without surprises during the limited duty a spare typically sees.
For a primary tire on a trailer that runs heavy and constant, we would step up. The tread and sidewall do not have the longevity or abuse resistance of the Goodyear, Carlisle, or Maxxis, so in daily heavy service it ages faster. As a correctly rated spare, or for a trailer that only sees occasional lighter loads, it fills the role well and ensures that if you do have a blowout, the replacement on the rim is a genuine 14 ply tire and not a weak link.
- Steel belted radial construction with full 4080 lb Load Range G capacity
- Conventional highway tread pattern for predictable everyday towing
- Readily available size and spec for quick matching to existing tires
Pros: Full premium load rating at an accessible price; Easy to match to a common trailer tire size for a spare; Reliable for lighter duty and standby use
Cons: Tread and sidewall longevity fall short of the established brands; Best kept for spare or lighter duty rather than constant heavy hauling
Frequently Asked Questions
What does a 14 ply rating actually mean on a trailer tire?
A 14 ply rating means the tire carries a Load Range G designation, which on modern radials is a measure of strength rather than a literal count of fabric layers. Decades ago tires really did stack 14 plies of cotton or nylon, but today a Load Range G tire uses just a few high strength steel and polyester belts engineered to equal the capacity of those old 14 ply tires. The practical meaning is a higher maximum load and a higher allowable inflation pressure, typically around 110 psi, which lets the tire safely carry roughly 3900 to 4100 pounds depending on size. When you see 14 ply, read it as heavy duty Load Range G, not as a count of layers.
Do I really need 14 ply tires or will 10 ply be enough?
It comes down to your loaded trailer weight and a safety margin. Add up the weight of every tire position at maximum load and make sure the combined rated capacity comfortably exceeds your loaded gross trailer weight, ideally by about twenty percent. A 10 ply Load Range E tire often tops out near 3000 to 3500 pounds per tire, which is plenty for many utility and travel trailers. But once you are hauling equipment, a loaded car, a dump body, or a large fifth wheel, you can exceed that, and that is exactly where 14 ply Load Range G earns its place. If your numbers leave you running an E tire near its limit, stepping up to G buys you cooler running tires and real headroom.
What inflation pressure should I run in a 14 ply trailer tire?
Run the pressure printed on the tire sidewall, which for most 14 ply Load Range G trailer tires is around 110 psi cold, and never less for a loaded trailer. Trailer tires, unlike passenger tires, are designed to carry their rated load only at or near their maximum sidewall pressure, so underinflation is the single most common cause of blowouts. Always set pressure when the tires are cold, before driving, because heat from rolling will raise it. If you are running well under the trailer’s capacity you can consult a load and inflation table to drop pressure slightly, but for heavy hauling keep them aired to the sidewall figure and check them before every trip.
How fast can I safely tow on 14 ply trailer tires?
Most quality 14 ply trailer tires now carry an 81 mph speed rating, marked with the letter L, which is a big improvement over older ST tires that were limited to 65 mph. That said, the speed rating is a maximum under ideal conditions, not a target. Trailer tires build heat quickly under heavy load, and heat is what destroys them, so most experienced haulers cruise at 65 to 70 mph even on tires rated higher. Running flat out at the rating limit on a hot day with a fully loaded trailer leaves no margin. Treat the 81 mph number as headroom that keeps the tire safe at normal highway speeds, not as permission to push it.
How long do 14 ply trailer tires last and when should I replace them?
Trailer tires usually age out before they wear out. Even with deep tread remaining, the rubber degrades from sunlight, ozone, and heat cycling, so most manufacturers recommend replacement at three to five years regardless of mileage, and many haulers treat five years as a hard ceiling. Check the four digit DOT date code on the sidewall, where the first two digits are the week and the last two are the year of manufacture, so you know how old the tire truly is. Beyond age, replace any tire showing sidewall cracking, bulges, flat spotting from sitting, or uneven wear. Storing the trailer out of direct sun and keeping the tires covered noticeably slows the aging that ends most trailer tires.
Our Verdict
For most heavy haulers the Goodyear Endurance Load Range G is the tire to beat, combining a true 4080 pound rating, an 81 mph speed rating, a Made in USA build, and the toughest sidewall in the test, which is why it takes our top spot. If you want nearly all of that capability for noticeably less money, the Carlisle Radial Trail HD is our runner up and the smart value choice, giving up only a little sidewall toughness against gravel abuse. Match the size and rating to your loaded trailer weight, keep them inflated to the sidewall, and any tire on this list will carry your load safely.
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