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Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Buying trailer tires in the 235/85R16 size is mostly a search for one thing: a 14-ply, Load Range G tire that keeps its shape when your trailer is packed to the roof. The size and the ply rating are fixed by your trailer, so the real choice is between brands, sidewall builds, and how each one behaves once it is bolted on and rolling. This guide walks you through seven tires that all match that exact spec, explains which ones suit which load in plain English, and points out where each one falls short.
I’m Mo Maruf — the founder and writer behind The Tools Trunk. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Every model here is a 235/85R16 all-steel radial rated Load Range G, and the differences that actually matter come down to load index, sidewall thickness, and mounting difficulty. That is exactly what this breakdown of the 235/85r16 14 ply tires covers.
Our Picks at a Glance
How To Choose The Best 235/85R16 14 Ply Tires
Start with the numbers stamped on the sidewall of the tires you are replacing. If your trailer calls for 235/85R16 and Load Range G, you are shopping inside a narrow shelf, and every tire below sits on it. From there, the decision is about load index, how the steel casing behaves under weight, and how hard the tire is to mount.
Load index and what it means for your trailer
A load index like 132/127 is two numbers in one. The first figure is the capacity when the tire runs alone on an axle, and the second is the capacity when it runs as a pair on a dual-wheel setup. On these tires that works out to thousands of pounds per tire, so the index tells you whether a set can carry your trailer and cargo, not just whether it fits the rim.
All-steel construction versus a softer sidewall
An all-steel tire uses steel cords in the body of the tire, not just under the tread. That stiff casing is what resists side-to-side sway when you tow a tall fifth wheel or a loaded equipment trailer. The trade-off is weight and stiffness, which shows up at the tire machine.
Speed rating and cold pressure
The speed rating letter tells you the top speed the tire is certified to hold at its rated load. Pressure specs matter just as much, because an all-steel tire that runs under-inflated builds heat fast. Check the maximum pressure on the sidewall and match it to your load.
Quick Comparison
| Model | Best For | Load Index | Load Range | Speed Rating | Amazon |
|---|---|---|---|---|---|
| Transeagle ST 14 Ply (Single)★ Best Overall | Everyday trailer duty | 132/127 | G | M (81 mph) | Amazon |
| Roundrule Xtra ST 14 PlyBest Value | Heavy loads on a budget | 132/127 | G | M (81 mph) | Amazon |
| GREMAX HD All Steel 14-Ply | Tough sidewalls for big RVs | 132/127 | G | M | Amazon |
| Sailun S637 Trlr 235/85R16 | Fifth wheel and toy hauler | 132/127 | G | L | Amazon |
| 4 x Suntek HD Trail + 14 Ply | Replacing a full trailer set | 132/127 | G | M (81 mph) | Amazon |
| 4 x Transeagle ST 14 Ply | Multi-axle trailers, four at once | 132/127 | G | M (81 mph) | Amazon |
| GREMAX 4 All Steel 14 Ply | Full set for heavy RV rigs | 132/127 | G | M | Amazon |
In‑Depth Reviews
1. Transeagle ST ST235/85R16 132/127M All Season G (14 Ply) All Steel Tire
Our pick — over 4.5★ from 250+ verified ratings; the strongest balance of quality and price.
The all-steel trailer tire that shrugs off overloaded dump runs without flexing
This is the 235/85R16 Load Range G tire to buy if you want predictable highway manners and no surprises at the scale. It carries a 132/127 load index, which means it handles heavy single-axle loads and dual-wheel setups alike. The speed rating is M, certified to 81 mph, so it is legal for the highway speeds most trailer owners actually run.
At 52 pounds, this tire is easier to lift onto the hub than the GREMAX HD at 68 pounds — a real difference if you are mounting four yourself, since the Transeagle is less punishing on the tire bar. That said, the stiffness that makes all-steel tires strong also means mounting takes real effort. The casing is radial (the plies run across the tire for a smoother ride) and the sidewall is black, so it looks like a proper trailer tire, not a light-duty compromise. It is rated for all-season traction (grip in dry, wet, and light snow), and the load it is built for is genuinely substantial given the index.
What wins people over is the quality of the build. The overwhelming pattern in the reviews is owners who keep coming back — one reviewer noted ordering eight over several years with zero blowouts, and specifically noted that a premium-name tire with the same ply rating had blown out in its second year while these held up. That is the kind of durability note that matters when you are towing heavy. On the honest side, a couple of owners mention the tire is stiff to seat on the rim, and one noted the price feels on the high side, though the same buyer still rated it five stars. It is not the lightest or cheapest pick here — the Roundrule Xtra is slightly more affordable — but it is the pick with the strongest repeat-buyer track record here.
What owners rely on
- 132/127 load index handles loaded trailers without complaint
- 81 mph speed rating keeps it legal on the interstate
- Lighter than the GREMAX HD at 52 pounds versus 68 pounds
- Buyers report long service across repeat purchases
What to keep in mind
- Stiff all-steel sidewall makes hand-mounting a workout
- A few owners feel the price runs a touch high
- Your trailer needs the exact 235/85R16 G fitment
Reach for this if: you want you tow a loaded trailer and would rather pay for a proven durability record than save a few dollars.
Look elsewhere if: your trailer is already fitted with a different brand and you want to match an existing set exactly.
2. Roundrule Xtra ST235/85R16 132/127M All Season G (14 Ply) All Steel Tire
Hauls a loaded cattle trailer down the interstate without a wobble
The Roundrule Xtra is the tire for a trailer that stays busy and keeps stacking up loads. It matches the exact 235/85R16 spec that the best trailer tires run: 132/127 load index, Load Range G, all-steel radial construction, and an 81 mph speed rating. Owners push it hard — one report covers hauling cattle at 75 mph on the interstate, and it also shows up as a five-star performer under a loaded Jeep on a tilt trailer with no sway. That is the all-steel casing doing its job.
Weighing 57 pounds, it sits between the lighter Transeagle and the heavier GREMAX HD in the hand, so it is not the hardest tire here to lift, but it still demands a good tire shop or a serious bar-and-spoon session to seat. Maximum pressure is 110 psi (pounds per square inch, the air pressure inside the tire), which matters because these tires are designed to run at higher cold pressure than a standard passenger tire and gain their stiffness from it.
The strongest theme across owner reports is quality, with value for money a close second. It is very nearly as capable as the Transeagle at a slightly lower cost, which makes it the pick when you are outfitting a whole trailer and want to spend less per corner. The honest caveat is durability — a portion of owners mention tread separation over time, though plenty of others say they wear well and last, so it is a case of checking pressure and load carefully rather than assuming any tire is faultless. Ordering from Amazon also lands the tires in your driveway ready to install, which owners consistently note as a convenience win.
The value argument: you get the full 132/127 index and 4409 lb capacity for less than most of the premium single-tire picks, and the reviews back it up on real hauling work.
Buy with eyes open on: durability feedback splits, so treat 110 psi pressure checks as non-negotiable if you want these to go the distance.
The smart money move: buy this if you are tire-shopping for a working trailer and want maximum load capability per dollar.
Step up if: you would rather pay a little more for the pick with the longest repeat-buyer track record.
3. GREMAX HD All Steel ST235/85R16 14-Ply RV Trailer Tires LRG 132/127M
The heavyweight built for big RVs and the load that comes with them
If your rig is a heavy fifth wheel or a big travel trailer, the GREMAX HD is aimed squarely at you. It is the heaviest single tire in this lineup at 68 pounds, and everything about it is chunky — deep tread, thick all-steel casing, and a 132/127 load index rated to 4400 lb at 110 psi. Compare that to the 52-pound Transeagle, and you can feel why the GREMAX is the tire owners reach for when the trailer itself is already heavy.
The trade-off for all that beef is mounting. The bead is tough, and owners are blunt about it: this is not a tire you wrestle onto a rim with a cheap bar at home. The recurring advice is to take it to a proper tire shop, or at least warm it up first, because the sidewall will not budge easily. Once seated, though, it delivers. Owners who run it on long trips report it rolls out well, grips the highway, and holds pressure. One owner even ran these on a passenger car after the original tires gave out and found the ride surprisingly quiet for such a heavy tire.
Quality is the thing that keeps coming up. The bulk of the feedback is owners who find it tough, easy to install at a shop, and a strong value. There is a caution worth knowing: some customers note durability problems, including separating tread and a belt issue, and the occasional unit is a genuine failure. Those are the outliers, not the norm, but they exist — and the takeaway is to run the full 110 psi and check your load, which is what the happy owners are doing. It is not the lightest or the cheapest here, but it is the heaviest, stiffest casing in this lineup.
Where it shines
- Heaviest construction here at 68 pounds for maximum sidewall stiffness
- 4400 lb capacity at 110 psi suits big heavy RVs
- Reviewers point out quiet, well-mannered highway behavior
The catch
- Bead is tough — professional mounting strongly advised
- Durability feedback is mixed, so pressure discipline matters
- Heavier than the Transeagle and Roundrule
Built for: owners of substantial RVs and heavy trailers who want the stoutest casing they can buy.
Worth passing on if: you plan to hand-mount your own tires at home, because the thick bead fights back.
4. Sailun S637 Trlr – 235/85R16 132/127L G
A fifth-wheel favorite that wears beefy tread and holds its shape on the road
The Sailun S637 is the tire owners put on fifth wheels and toy haulers, and it earns that spot with a heavy, deep-tread build. It carries a 132/127 load index with Load Range G and a 14-ply rating, matching the size and ply spec exactly. Owners describe it as beefy and heavy with good tread, the way a 14-ply trailer tire should look, and one owner hauled a fifth wheel toy hauler all the way to Florida with no issues.
The spec that separates it from the pack is its speed rating. It runs a 132/127L rating, and the L is a higher speed designation than the M on most of the others. For a toy hauler covering long interstate runs, that headroom is worth noting. It is also a genuinely stiff tire to mount — one owner described getting it seated with bars and tire spoons, which is a job best left to a shop if you can manage it.
The pattern that stands out from buyers is confident, boring reliability on long trips. It has the smallest review base of the tires here, so treat the feedback as fewer voices but a strong early signal. One owner did report a blowout at low mileage, which is the kind of single incident that can come from a road hazard or an under-inflated tire as easily as a defect, so it is a reason to stay on top of pressure rather than to cross the Sailun off. If you want a proven fifth-wheel workhorse and can accept a smaller review history, this one fits.
what separates it: that L speed rating (good for up to 75 mph) gives it a little more highway headroom than the M-rated picks (good for up to 81 mph), and owners trust it under heavy toy haulers.
Buyer reality check: it is a beast to mount by hand, and the review history is thinner than the top picks here.
Ideal for: toy hauler and fifth wheel owners who want a stout, deep-tread tire with a higher speed rating.
skip it if: you want the largest body of owner feedback behind your purchase.
5. 4 x Suntek HD Trail + ST235/85R16 All Season G (14 Ply) All Steel Tires
One order, four matching tires, and a trailer that stops bouncing
If you are re-shoeing a whole trailer rather than replacing one tire, this four-pack of Suntek HD Trail + tires saves you the hassle of matching separate orders. Each tire is a 235/85R16 all-steel radial with a 132/127 load index, Load Range G, and an 81 mph speed rating, so the four match each other exactly. The set weighs 216 pounds in total, which is worth knowing before it arrives on your driveway.
The reviews make the case for buying the set. One fifth-wheel owner who replaced all four tires reported that pulling the camper became dramatically better, with far less bounce and sway — the stiffness of the all-steel sidewall doing exactly what you pay it for on a tall trailer. Another owner runs five trailers and has ordered four full sets of these, which is the sort of repeat buying that tells you the tire is holding up on real equipment work. They are stiff and sturdy, and mounting by hand is rough — a tire machine makes it far easier, and that is the honest catch with any all-steel tire at this ply rating.
What the owners keep coming back to is the quality and the thick sidewalls. It is a set built for camper, gooseneck, and equipment-trailer duty, and it performs across all of them. Being one of the lighter-weight value sets, it is a reasonable choice when you want four fresh tires in one shot without hunting for a bargain on each corner. The only thing to plan around is that mounting day is not a one-person job.
Why the four-pack works
- Four matching 132/127 Load Range G tires in one order
- Shoppers say reduced bounce and sway on tall campers
- Thick, sturdy sidewalls suited to gooseneck and equipment trailers
- Repeat-set buyers back it for heavy work
Plan ahead for
- 216 pounds arriving at once, plus mounting labor
- Hand-mounting is difficult — a tire machine is the smart route
- Not ideal if you only need to replace a single tire
Best picked by: trailer owners replacing all four tires in a single pass who want matching fitment and a stout camper-ready build.
One-tire shoppers can pass: this is a set purchase, not a single replacement.
6. 4 x Transeagle ST ST235/85R16 All Season G (14 Ply) All Steel Tires
The budget four-pack that still runs the full 14-ply Load Range G spec
This is the set to consider when you need four tires for a trailer and want to keep the money down without dropping below the Load Range G spec. Each tire is a 235/85R16 all-steel radial with a 132/127 load index and an 81 mph speed rating, identical in spec to the pricier sets above. The four together weigh 208 pounds, so expect a heavy delivery.
The clearest owner story here is one of hard use. A buyer kept a set through years of abuse, including repeated overloads, patches, plugs, potholes, and curbs, and reported that two of the four were still holding air like new. That is the kind of longevity owners hope for and rarely get from a budget trailer tire. Feed them the right pressure and they hold up like a champ under max load, which is what the set is built for.
There is one real caution: durability feedback is split, with some owners reporting tires lasting under a year and one reporting a blowout when fully loaded to a heavy rating across all four. Those are the exceptions among satisfied buyers, but they are a reminder that trailer tires live and die by correct pressure and realistic loading. Worth knowing too — when you order a quantity of four, the order can arrive in two separate deliveries of two, so do not panic if the first box looks light. If you want a four-tire set on a budget and you will stay on top of your pressures, this is a sensible pick.
The value case: full 132/127 Load Range G spec and a set of four for budget-tier money, with owners reporting years of hard service.
Mind the fine print: durability reports vary, and your four tires may ship as two deliveries of two.
Pick this when: budget is the priority but you refuse to drop below Load Range G for a gooseneck or utility trailer.
Think twice if: you would rather have the highest-confidence durability record in the lineup.
7. GREMAX 4 All Steel ST235/85R16 14Ply RV Trailer Tires Load Range G 132/127M
A full set of heavy all-steel RV tires for the long-haul rig
The four-pack version of the GREMAX HD brings the same heavy-duty build as the single tire, delivered as a complete set for a big RV. Each tire is a 235/85R16 all-steel radial (the plies run across the tire for a smoother ride) with a 132/127 load index (a code for how much weight it can carry), Load Range G, rated to 4400 lb at 110 psi, and each one weighs 68 pounds — the heaviest tire construction in this guide.
Owners who run these on real rigs are the most convincing argument. One pulled a 45-foot toy hauler on a long trip and reported the tires ran cool and held pressure even after surviving a tread blowout on another tire in the same trip, with the inner tire staying solid. Another covered thousands of miles on a heavy trailer and reported the set rolling and wearing well, though the shop noted they were hard to mount and balance. That mounting difficulty is the recurring theme with these all-steel tires, and it is not a defect — it is what a stiff casing costs you in labor.
The area owners praise most is the quality and the weight capacity, and it is a set that handles heavy cross-country loads. The honest caution is durability: a minority of buyers report internal cord failures on rough roads at near-max load, and one noted the price on these has crept up. For a set that carries thousands of pounds per tire, the sensible approach is to run the full 110 psi, balance them properly, and keep the load within the rated limit. Do that, and this is a strong, confidence-inspiring set for a heavy rig.
The strengths
- Set of four heavy 68-pound all-steel tires rated to 4400 lb each
- Owners mention cool running and stable pressure on long trips
- Strong on smooth, heavy cross-country towing
- Respected for quality and weight capacity
Worth knowing
- Reports of internal cord failure on rough roads at max load
- Difficult to mount and balance — budget shop labor
- Some owners have seen the price rise over time
Made for: big rig owners who want a complete set of the heaviest all-steel RV tires and will keep them properly inflated and balanced.
Not the pick if: you want a light, easy-to-hand-mount tire for occasional light towing.
Understanding the Specs
Load Index (132/127)
The load index is the number that tells you how much weight a single tire can safely carry. A rating like 132/127 is two figures: the first is the capacity when the tire is used alone on an axle, and the second is the capacity when it is paired with a twin on a dual setup. For a 235/85R16 Load Range G tire, this index puts each tire in the thousands-of-pounds range, which is what lets a trailer haul serious cargo. Match your trailer’s loaded weight to the total capacity of all your tires, and never exceed it.
Load Range and Ply Rating
Load Range G and a 14-ply rating describe the same construction from two angles: the ply rating is the traditional way to state how strong the casing is, and Load Range G is the modern letter code for it. A G-rated tire carries far more weight than the lower Load Range E (10-ply) tires that many trailers ship with. If your trailer calls for G, stay with G — dropping to a lower rating lowers the weight you can carry and increases the risk of a failure under load.
Maximum Pressure (psi)
The maximum pressure marked on the sidewall is not just a limit — it is the pressure at which the tire reaches its full rated load capacity. Many of the tires here are rated at 110 psi, and running them well below that softens the sidewall and builds heat. Because all-steel trailer tires run stiff on purpose, correct cold inflation is the single most important habit for getting full life out of them.
Speed Rating Letters
The speed rating is a letter that certifies the top speed a tire can hold while carrying its rated load. The M rating on most of these tires corresponds to 81 mph, which covers normal highway towing. The Sailun S637 carries an L rating, a higher speed designation, which gives a little more headroom for long interstate runs. Always match the rating to how fast you actually tow, and never run a loaded tire above its certified speed.
FAQ
What does 14 ply mean on a 235/85R16 trailer tire?
Will a 235/85R16 Load Range G tire fit my trailer?
What is a 132/127 load index on a trailer tire?
Is an all-steel trailer tire better than a polyester one?
What pressure should I run my Load Range G trailer tires at?
How long do 14 ply trailer tires usually last?
Can I mix this 14 ply trailer tire with a different brand on the same axle?
Are Load Range G trailer tires harder to mount than Load Range E?
Does a higher speed rating letter matter for a trailer tire?
What is the maximum load a 235/85R16 Load Range G tire can carry?
Final Thoughts: The Verdict
For most trailer owners, the 235/85r16 14 ply tires winner is the Transeagle ST 14 Ply because it pairs the full 132/127 Load Range G spec with the strongest repeat-buyer track record here, rated 4.8 stars by 270+ owners. If you want the same toughness for a little less per corner, the Roundrule Xtra ST is the value play and handles loaded trailer work with confidence. And if you are re-shoeing a whole trailer in one order — camper, gooseneck, or equipment — the four-tire Suntek HD Trail + set is the one to reach for. Whichever you pick, keep them at the rated cold pressure and stay inside your load limit, and these all-steel tires will earn their keep.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of September 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, The Tools Trunk earns from qualifying purchases. This does not affect which products we feature.