Tire model · Mud-terrain
Toyo Open Country M/T
Toyo’s long-running mud-terrain. It carries the strongest composite retailer rating of the tires tracked here, and publishes no noise figure at all.
By Bill Belcamino · Last verified 17 September 2026
In short
What it is
A mud-terrain offered across common light-truck sizes, including LT265/75R16, LT265/70R17 and LT285/70R17.
What Toyo publishes
A stated position on snow: usable grip in light snow, explicitly without three-peak mountain snowflake certification. Toyo is the only manufacturer tracked here that states its snow position outright rather than staying silent.
What it does not publish
No noise figure, and no treadwear warranty. Its three-ply polyester casing is described in Tire Rack’s listing rather than on Toyo’s own page.
Third-party rating
9.3 overall on SimpleTire’s SimpleScore — a composite of that retailer’s own categories, not an independent laboratory measurement.
Tracked price
$430.67 per tire in LT285/70R17, read 11 September 2026 — the most expensive of the six tracked.
Published specifications
Figures below are either stated by the manufacturer or carried by specification listings, with the source named on each row. Where nothing is published the row says so, rather than being left blank or filled from a neighbouring size. Matched-size figures for all six tracked tires are in the specification database.
Specification
Value
Source
Tread depth (LT285/70R17)
18.9/32″
tiresize.com
Load index / speed (LT285/70R17)
121/118P · Load Range E
tiresize.com
Casing
Three-ply polyester, high-strength steel belts
Tire Rack
Tread depth (33×12.50R17)
21/32″
tiresize.com
Weight (33×12.50R17)
70.0 lb
tiresize.com
Measured diameter (37×12.50R17)
36.8″
tiresize.com
3PMSF certification
No
Toyo
Snow position
Usable grip in light snow, without 3PMSF
Toyo
Noise figure
Not published
—
Treadwear warranty
None
Tire Rack
Composite retailer rating
9.3 overall
SimpleTire SimpleScore
What is not published
Toyo publishes no noise figure, which means the Open Country M/T cannot be compared with the Nitto Trail Grappler on noise even informally — one has a number measured against a stablemate, the other has nothing. How loud are mud tires sets out why none of the published figures are comparable.
The 9.3 SimpleScore is a retailer composite, not a test result. We record it because it is the only third-party rating published for this tire, and label it as what it is.
The tiresize listing for LT285/70R17 shows the Load Range C version at 65 lb and the Load Range E version at 64 lb — the lighter-duty tire heavier than the heavier-duty one. We treat the figure as uncertain.
What it costs
Readings from the price tracker, re-checked monthly against the same retailer and the same sizes.
Size
Price per tire
Read
LT285/70R17
$430.67
11 Sep 2026
Stepping from 35×12.50R17 to 37×12.50R17 adds 6.0 lb per tire on the tiresize figures (78.0 lb to 84.0 lb).
Compared with
Nitto Trail Grappler vs Open Country M/T · Goodyear Wrangler MT/R vs Open Country M/T · BFGoodrich KM3 vs Open Country M/T · Falken Wildpeak M/T vs Open Country M/T · Open Country M/T vs R/T · Milestar Patagonia M/T-02 vs Open Country M/T
Where it appears on this site
mud tires in snow · daily driving · noise · 37-inch · warranties compared · Tacoma fitment · specification database
Sources
Toyo Tires, Open Country M/T (toyotires.com) · Toyo Tires Canada, Open Country M/T (toyotires.ca) · Tire Size, Open Country M/T model specification pages (tiresize.com), read 17 September 2026 · Tire Rack, Toyo Open Country M/T specifications (tirerack.com) · SimpleTire, Open Country M/T (simpletire.com).
How these figures are gathered and what we refuse to estimate: our method.