Yokohama Geolandar A/T4 vs Toyo Open Country A/T III on a Tacoma
Short answer
Both are 3PMSF-rated all-terrains that tie on comfort, wet, snow, efficiency, and looks. The Toyo Open Country A/T III takes trail, mud, durability, and tread life by a point each for a blended 8.1. The Yokohama Geolandar A/T4 takes value by a point and sits a budget tier lower, blending to 7.9 - a small capability gap for a real price gap.
Geolandar A/T4 vs Open Country A/T III: the same tire on five axes
These two are the classic mid-shortlist all-terrain pairing for a Tacoma: not the aggressive hybrids, not the mild highway-biased tires, but the do-everything middle where most owners actually land. The Toyo Open Country A/T III ranks third of eighteen all-terrains and fourth of fifty overall. The Yokohama Geolandar A/T4 ranks fifth of eighteen and seventh overall. They cover nine of the same Tacoma sizes, both carry the severe-snow rating, and five of the ten scored axes come out exactly level.
| Score axis (0-10) | Yokohama Geolandar A/T4 | Toyo Open Country A/T III | Edge |
|---|---|---|---|
| Road comfort | 8 | 8 | Tie |
| Wet grip | 8 | 8 | Tie |
| Snow | 9 | 9 | Tie |
| Trail | 7 | 8 | Toyo by 1 |
| Mud | 4 | 5 | Toyo by 1 |
| Durability | 7 | 8 | Toyo by 1 |
| Tread life | 8 | 9 | Toyo by 1 |
| Efficiency | 6 | 6 | Tie |
| Looks | 7 | 7 | Tie |
| Value | 8 | 7 | Yokohama by 1 |
| Blended score | 7.9 | 8.1 | Toyo by 0.2 |
Reading the scores honestly
Each axis is an editorial synthesis of published manufacturer specifications, tire-industry write-ups, retailer fitment data, and Tacoma-owner reports across the 83 documents this dataset cites. Taco Tires performs no instrumented testing, so a one-point difference indicates which way the published record leans, not a measured margin. The method is on the about page under How we score tires.
What ties, and why it matters most
Road comfort 8, wet grip 8, snow 9, efficiency 6, and looks 7 - all identical. Those five cover most of a Tacoma's year. Both tires carry the 3-Peak Mountain Snowflake severe-snow rating, both are accepted where winter tires are legally mandated, and a 9 on snow is the highest mark any all-terrain reaches in this dataset. So the seasonal question, which decides many Tacoma tire comparisons, decides nothing here.
The comfort and efficiency ties matter for the same reason. If your Tacoma commutes, these two will sound the same, ride the same, and cost roughly the same in fuel. Both are tagged for all-weather daily driving and snow. What is left is a narrow band of off-road capability, a point of tread life, and a point of price - which is a much smaller decision than the brands' marketing would suggest.
Where the Toyo Open Country A/T III wins
Four axes, each by one point, and they group into two ideas. The first is dirt: trail 8 against 7, mud 5 against 4, durability 8 against 7. The Toyo is the marginally more capable and marginally tougher tire when the surface stops being pavement, which lines up with its dataset tag for daily trail use and the Yokohama's caution about not being the most aggressive sidewall available.
The second is longevity: tread life 9 against 8. That 9 is the highest tread-life score of any all-terrain in the set, and it is one of the two attributes the dataset names the Toyo for. Over a four-year ownership window that single point is the most financially meaningful line in the table, and it partly offsets the value gap running the other way.
One point of durability, in context
Both tires are well clear of the mild all-terrains here, but neither reaches the 9 that the KO3 and KO2 earn on durability. If your Tacoma sees sharp rock and regular aired-down running, this pair sits a notch below the sidewall specialists - the choice between them will not fix that, and a tougher-cased all-terrain is the better search.
Where the Yokohama Geolandar A/T4 wins
One scored axis, and it is the one that gets you to the checkout: value 8 against 7. The Geolandar A/T4 also sits a budget tier lower than the Toyo - medium against high - so the value edge reflects a genuine price difference rather than a judgement about worth. The dataset tags the Yokohama for value and for warranty specifically, and Yokohama publishes mileage warranty coverage for the Geolandar line that is worth reading against the Toyo's before you buy.
- Value 8 vs 7, from a medium-tier tire against a high-tier one: the cheapest route to a 9-rated snow score in this dataset.
- Ties on the five axes a daily-driven Tacoma feels most: comfort, wet, snow, efficiency, and looks.
- Tagged for all-weather daily driving, snow, value, and warranty - a straightforward description of a sensible commuter all-terrain.
- Its cautions are maximum mud and most aggressive sidewall, which is the mud 4 and the durability 7 restated in words.
That produces an unusual result: the tire that loses four axes to one is arguably the better buy for a large share of Tacomas. A 0.2 blended gap is the narrowest kind of win, and it is bought entirely with off-road capability and tread life. If your Tacoma's off-road use is gravel and graded dirt rather than rock and mud, the Yokohama gives up almost nothing you will use and takes back money you will.
Tacoma sizes: nine shared, two Toyo-only
Nine sizes appear on both lists, covering 16, 17, and 18 inch wheels: 265/75R16, 285/75R16, 265/70R17, 275/70R17, 285/70R17, 255/80R17, 265/70R18, 275/70R18, and 285/70R18. Every common Tacoma fitment from a stock-diameter replacement to a bolt-on 33 is available in either tire.
The Toyo adds two sizes the Yokohama does not carry in our data: 285/75R17, which is a genuine 34-inch fitment, and 295/70R18, the widest 18-inch option in the catalog. Both are lifted-truck sizes. The Geolandar A/T4 adds nothing the Toyo lacks, so if your build reaches past 33 inches on a 17, the comparison resolves on availability rather than on scores.
Match the load index, not just the size
Both models come in more than one construction depending on size. Whichever you choose, match or exceed the load index your Tacoma left the factory with so you keep its rated payload, and set inflation from a load table rather than copying the door placard once you are on a heavier LT casing.
The verdict for a Tacoma
The Toyo Open Country A/T III is the better tire and the Yokohama Geolandar A/T4 is the better deal, and for once that summary is precise rather than lazy: the Toyo wins four axes by one point each and the Yokohama wins the price axis by one point from a lower tier. Because the five tied axes cover almost everything a commuting Tacoma experiences, the honest recommendation depends on a single question - does your truck actually go anywhere hard?
- Buy the Toyo Open Country A/T III if you want the longest-wearing all-terrain in the set at tread life 9, or if trail, mud, and casing toughness are worth a premium tier to you.
- Buy the Yokohama Geolandar A/T4 if your off-road use is gravel and dirt roads, and you would rather keep the money - value 8 from a medium-tier tire with the same snow 9 and wet 8.
- Do not choose between them on winter: both are 3PMSF rated and both score 9, the top all-terrain snow mark on this site.
- If your Tacoma needs 285/75R17 or 295/70R18, the Toyo is the only one of the two that offers them.
Frequently asked questions
Neither. Both score 9 on our snow axis, which is the highest mark any all-terrain reaches in this fifty-model dataset, and both carry the 3-Peak Mountain Snowflake severe-snow rating. That makes both acceptable where severe-snow tires are legally required. Snow is one of five axes these two tie on, along with road comfort, wet grip, efficiency, and looks.
The Toyo Open Country A/T III, at tread life 9 against the Geolandar A/T4's 8 - and that 9 is the best tread-life score of any all-terrain in the dataset. Bear in mind the Yokohama is a medium-tier tire against the Toyo's high tier and scores a point higher on value, so the cheaper tire replaced slightly sooner may still be the lower total cost depending on the prices you are quoted.
It depends on where the truck goes. The Toyo's four one-point wins are trail, mud, durability, and tread life. If your Tacoma sees rock, ruts, and mud, those are real. If it sees pavement and graded gravel, you are paying a premium tier for capability you will not reach, and the Geolandar A/T4's tie on comfort, wet, snow, efficiency, and looks means you give up nothing you use.
Yes. The skinny 33-inch 255/80R17 is one of the nine sizes both tires share, along with 265/75R16, 285/75R16, 265/70R17, 275/70R17, 285/70R17, 265/70R18, 275/70R18, and 285/70R18. The Toyo additionally offers 285/75R17 and 295/70R18, which the Yokohama does not. Check clearance for your generation and lift before ordering any 33-inch size.
They are mid-pack on that axis. Durability is 8 for the Toyo and 7 for the Yokohama, where the BFGoodrich KO3 and KO2 score 9 and the mud-terrains reach 10. Both will handle gravel roads and moderate trails without concern, but a Tacoma that regularly airs down over sharp rock is better served by an all-terrain built around sidewall protection or by a rugged-terrain hybrid.
Keep going
Sources
- Yokohama Geolandar A/T4 product page (yokohamatire.com)
- Yokohama Geolandar tire warranty (yokohamatire.com)
- Toyo Open Country A/T III product page (toyotires.com)
- Discount Tire: all-terrain tire picks
- TrailTacoma: 3rd-gen all-terrain owner setups
- Four cited documents sit behind the Geolandar A/T4 row and three behind the Open Country A/T III row; both score sets are an editorial synthesis of that record, not measured results
Compare your exact sizes
Run any size in this guide through the Tacoma tire calculator to see diameter, width, speedometer error, effective gearing, and highway RPM before you buy.