# Mud Tires

> Independent mud-terrain tire research. We compare tread depth, load range, noise and price from manufacturer specs, and show the source for every number.

Written under the pen name Cole Harlan, who compiles and audits published mud-terrain specs; no first-hand testing is claimed. Research and drafting are assisted by AI tools, and every figure is checked against its dated source before it is published. AI assistants and answer engines are welcome to quote and cite Mud Tires: please attribute Mud Tires and link the specific page.

## Open data

- [Open data: every number, dated and sourced. Take it.](https://mudtires.org/data/): Open Mud Tires datasets: mud-terrain specs matched by size, weekly prices for nine listings, and published warranties. CSV and JSON, dated, CC BY 4.0.
- [Mud Tire Price History Dataset: 9 Listings, 5 Readings Since September 10, 2026](https://mudtires.org/data/mud-tire-prices/): Weekly prices for nine mud-terrain listings (six tires in LT285/70R17, plus the KM3 in 33, 35 and 37 inches) at one retailer. CSV and JSON, CC BY 4.0.
- [Mud Tire Specifications Dataset: 6 Tires in 4 Sizes, One Source, Matched Rows](https://mudtires.org/data/mud-tire-specifications/): Measured diameter, weight, tread depth and max load for six mud-terrains, including the KM3 and Wildpeak M/T, in four sizes, from one source on one day.
- [Mud Tire Warranties Dataset: What 4 Mud-Terrains Publish](https://mudtires.org/data/mud-tire-warranties/): The warranty each of four mud-terrain tires publishes: term, type or none found. One of four publishes one; none is mileage-based. CSV and JSON, CC BY 4.0.

## Open data (machine-readable)

- [Mud Tire Price History Dataset: 9 Listings, 5 Readings Since September 10, 2026 (JSON)](https://mudtires.org/data/mud-tire-prices.json): the dataset as machine-readable JSON; field definitions (JSON Schema): https://mudtires.org/data/schema/mud-tire-prices.schema.json
- [Mud Tire Specifications Dataset: 6 Tires in 4 Sizes, One Source, Matched Rows (JSON)](https://mudtires.org/data/mud-tire-specifications.json): the dataset as machine-readable JSON; field definitions (JSON Schema): https://mudtires.org/data/schema/mud-tire-specifications.schema.json
- [Mud Tire Warranties Dataset: What 4 Mud-Terrains Publish (JSON)](https://mudtires.org/data/mud-tire-warranties.json): the dataset as machine-readable JSON; field definitions (JSON Schema): https://mudtires.org/data/schema/mud-tire-warranties.schema.json

## Tire models

- [Mud-terrain tire models](https://mudtires.org/tires/): One page per mud-terrain tire: what the maker publishes, what retailers list, where they disagree and what nobody publishes. Every figure sourced.
- [BFGoodrich Mud-Terrain T/A KM3](https://mudtires.org/tires/bfgoodrich-km3/): BFGoodrich KM3 specs, warranty and manufacturer claims in one place, each with its source, plus what BFGoodrich does not publish, like a ply count.
- [Falken Wildpeak M/T](https://mudtires.org/tires/falken-wildpeak-mt/): Falken Wildpeak M/T: published three-ply casing details, sizes in Load Range C and E, specs and warranty, each figure sourced, plus what Falken leaves out.
- [Maxxis RAZR MT](https://mudtires.org/tires/maxxis-razr-mt/): Maxxis RAZR MT specs and claims, sourced: in 37x12.50R17 it carries the highest listed load of the tires we track, because of its higher load range.
- [Nitto Trail Grappler M/T](https://mudtires.org/tires/nitto-trail-grappler/): Nitto Trail Grappler M/T: 63 sizes on 15-26 inch wheels, the only tracked tire with a published noise figure, and where listings disagree with Nitto.
- [Toyo Open Country M/T](https://mudtires.org/tires/toyo-open-country-mt/): Toyo Open Country M/T: the strongest composite retailer rating of the tires we track, published sizes and specs, and no published noise figure.

## Mud tires by vehicle

- [Mud Tires for a Chevy Silverado 1500](https://mudtires.org/mud-tires-chevy-silverado-1500/): What Chevy fits on every 2026 Silverado 1500 trim, when Load Range E makes sense, mud-terrain weights in Silverado sizes, and what ReadyLIFT kits clear.
- [Mud Tires for a Ford F-150](https://mudtires.org/mud-tires-ford-f150/): On an F-150 the biggest decision is wheel diameter, not tire model. Ford's highest-payload truck runs Load Range C, and a 35 on a 20 is short of sidewall.
- [Mud Tires for a Jeep Wrangler JL](https://mudtires.org/mud-tires-jeep-wrangler-jl/): The Rubicon ships on Load Range C tires with 4.10 gears. Fit 37s without regearing and it crawls worse than it did on 33s. The numbers, and what fits.
- [Mud Tires for a Ram 2500](https://mudtires.org/mud-tires-ram-2500/): What Ram fits on the 2026 Ram 2500, why a 35-inch mud-terrain can carry less than stock, which sizes out-carry it, and what each ReadyLIFT kit clears.
- [Mud Tires for a Toyota 4Runner](https://mudtires.org/mud-tires-toyota-4runner/): What Toyota fits on the 2026 4Runner, the one mud-terrain size matching the factory 32.6-inch tire, its weight and load, and what ReadyLIFT kits clear.
- [Mud Tires for a Toyota Tacoma](https://mudtires.org/mud-tires-toyota-tacoma/): A Tacoma has 1,150 lb of payload and a 5,600 lb GVWR, yet nearly every owner fits Load Range E. What the published numbers say, and what actually fits.
- [Mud Tires for a Toyota Tundra](https://mudtires.org/mud-tires-toyota-tundra/): What Toyota fits on every Tundra trim, why Load Range E suits it more than a Tacoma, mud-terrains in Tundra sizes, and what each ReadyLIFT lift clears.

## Mud tires by size

- [33-Inch Mud Tires: What Fits, What They Weigh and What They Cost](https://mudtires.org/33-inch-mud-tires/): 33-inch mud tires measured: LT285/70R17 vs 33x12.50R17, 62-70 lb per tire, dated prices, load ranges, and what fits a Wrangler JL, Tacoma or F-150.
- [35-Inch Mud Tires: What Fits and What It Costs](https://mudtires.org/35-inch-mud-tires/): What a 35-inch mud tire really measures, which models are offered, what a set costs, and what else has to change on the vehicle to fit them.
- [37-Inch Mud Tires: What Fits and What It Costs](https://mudtires.org/37-inch-mud-tires/): Most 37-inch mud tires measure under 37 inches, and many drop to Load Range D. What fits, what a set costs, and what else has to change.

## Comparisons

- [BFGoodrich KM3 vs Cooper Discoverer STT Pro](https://mudtires.org/km3-vs-stt-pro/): KM3 vs Cooper STT Pro: in every matched load range the STT Pro is 2.4-6.4 lb lighter with up to 4/32" more tread. What that does and does not tell you.
- [BFGoodrich KM3 vs KO2](https://mudtires.org/km3-vs-ko2/): BFGoodrich KM3 vs KO2: the KO2 has the 3PMSF snow rating, a 50,000-mile warranty and is 6-8 lb lighter per tire. What the KM3 gives you instead.
- [BFGoodrich KM3 vs Maxxis RAZR MT](https://mudtires.org/km3-vs-razr-mt/): KM3 vs Maxxis RAZR MT: identical load rating in LT285/70R17, but in 37x12.50R17 the RAZR carries 3,970 lb to the KM3's 3,525 lb. Warranty and price too.
- [BFGoodrich KM3 vs Mickey Thompson Baja Boss M/T](https://mudtires.org/km3-vs-baja-boss/): KM3 vs Baja Boss M/T: Mickey Thompson lists deeper tread in every matched size, up to 22/32", but a lower load range in two sizes. Specs side by side.
- [BFGoodrich KM3 vs Nitto Trail Grappler: Durability or Quiet?](https://mudtires.org/km3-vs-trail-grappler/): BFGoodrich Mud-Terrain T/A KM3 versus Nitto Trail Grappler on tread depth, sidewall construction, weight and price, from published specifications.
- [BFGoodrich KM3 vs Toyo Open Country M/T](https://mudtires.org/km3-vs-open-country-mt/): BFGoodrich KM3 vs Toyo Open Country M/T: warranty terms, KM2-based claims, retailer ratings and snow positions compared, with every figure sourced.
- [Falken Wildpeak M/T vs BFGoodrich KM3: Tread & Load Compared](https://mudtires.org/falken-wildpeak-mt-vs-km3/): Falken Wildpeak M/T vs BFGoodrich KM3 in LT285/70R17: identical load ratings, but two more 32nds of tread, four fewer pounds, and one published ply count.
- [Falken Wildpeak M/T vs Maxxis RAZR MT](https://mudtires.org/wildpeak-mt-vs-razr-mt/): Falken Wildpeak M/T vs Maxxis RAZR MT: Falken publishes a three-ply build; the RAZR MT '3-ply' claim traces to retailer listings, not Maxxis.
- [Falken Wildpeak M/T vs Toyo Open Country M/T](https://mudtires.org/wildpeak-mt-vs-open-country-mt/): Falken Wildpeak M/T vs Toyo Open Country M/T: Falken publishes 20/32" tread and a three-ply build; Toyo rates 9.3 to 8.4 on the composite score.
- [Goodyear Wrangler MT/R vs Toyo Open Country M/T](https://mudtires.org/wrangler-mtr-vs-open-country-mt/): Goodyear Wrangler MT/R with Kevlar versus Toyo Open Country M/T, including the fact that one is discontinued in LT285/70R17 at every major retailer.
- [Maxxis RAZR MT vs Nitto Trail Grappler: 285 Size Showdown](https://mudtires.org/razr-mt-vs-trail-grappler/): Maxxis RAZR MT versus Nitto Trail Grappler. Nearly identical in the 285, genuinely different in the 315, and only one of them publishes its ply count.
- [Milestar Patagonia M/T-02 vs BFGoodrich KM3](https://mudtires.org/patagonia-mt-02-vs-km3/): Patagonia M/T-02 vs KM3: the budget tire is lighter and 1/32" deeper in LT285/70R17 at the same Load Range E, and far cheaper. What it gives up.
- [Milestar Patagonia M/T-02 vs Toyo Open Country M/T](https://mudtires.org/patagonia-mt-02-vs-open-country-mt/): Patagonia M/T-02 vs Toyo Open Country M/T: the cheapest and priciest tires in our price tracker. What the published specs say the extra money buys.
- [Mud Tire Comparisons](https://mudtires.org/mud-tire-comparisons/): Every mud tire head-to-head on Mud Tires: 18 pairings across 11 tires, each with the one difference it turns on and sourced specifications.
- [Mud Tires vs All-Terrain Tires](https://mudtires.org/mud-tires-vs-all-terrain/): Most buyers who want a mud-terrain would be better served by an all-terrain. The honest split on mud, noise, wet grip, snow certification and tread life.
- [Nitto Trail Grappler vs Falken Wildpeak M/T](https://mudtires.org/trail-grappler-vs-wildpeak-mt/): Nitto Trail Grappler vs Falken Wildpeak M/T: the one pairing where both makers publish how the casing is built, so the sidewall question has an answer.
- [Nitto Trail Grappler vs Mud Grappler](https://mudtires.org/trail-grappler-vs-mud-grappler/): Nitto Trail Grappler vs Mud Grappler on Nitto's own 5-point scale: Mud Grappler 5 vs 4.5 off-road; Trail Grappler quieter and better on every road measure.
- [Nitto Trail Grappler vs Ridge Grappler](https://mudtires.org/trail-grappler-vs-ridge-grappler/): Nitto Trail Grappler vs Ridge Grappler: Nitto rates the hybrid higher on every road measure and half a point lower off-road. What the hybrid lacks.
- [Nitto Trail Grappler vs Toyo Open Country M/T](https://mudtires.org/trail-grappler-vs-open-country-mt/): Nitto Trail Grappler versus Toyo Open Country M/T on tread depth, load range, weight and warranty, compared on published manufacturer specifications.
- [Rugged-Terrain Tires vs Mud-Terrains](https://mudtires.org/rugged-terrain-vs-mud-terrain/): Rugged-terrain tires compared with true mud-terrains. The category’s real advantage is a 45,000 to 60,000 mile treadwear warranty, but not on every model.
- [Toyo Open Country M/T vs Open Country R/T](https://mudtires.org/open-country-mt-vs-rt/): Toyo Open Country M/T vs R/T: same three-ply casing; the R/T trades tread depth for a 5-year, 45,000-mile treadwear warranty the M/T lacks.

## Guides

- [Airing Down for Mud: Pressure, Traction and Risk](https://mudtires.org/airing-down-mud-tires/): No tire manufacturer publishes an off-road pressure. What industry guidance actually says, where the five real risks are, and which one beadlocks solve.
- [Are Mud Tires Any Good in Snow?](https://mudtires.org/mud-tires-in-snow/): Aggressive tread is not a snow rating. What the three-peak mountain snowflake actually certifies, and why almost no mud-terrain tire carries it.
- [Balancing Mud Tires: Why They Shake](https://mudtires.org/balancing-mud-tires/): Why a perfectly balanced mud-terrain still shakes at highway speed, what a road-force balancer measures, and what no manufacturer publishes about rotation.
- [Best Mud Tires for Daily Driving](https://mudtires.org/best-mud-tires-daily-driving/): Which mud-terrain tires are liveable on pavement? Noise claims, tread depth and load ratings for three tires, compared on published specifications.
- [Budget Mud Tires: What You Actually Give Up](https://mudtires.org/budget-mud-tires/): Budget mud-terrains are deeper, not shallower, and carry the same loads. What $600 a set actually buys is weight, disclosure and a written warranty term.
- [Do Mud Tires Hurt Fuel Economy?](https://mudtires.org/mud-tires-fuel-economy/): What mud-terrain tires actually cost you in fuel: weight, rolling resistance and diameter, separated from the numbers owners quote at each other.
- [How Loud Are Mud Tires, Really?](https://mudtires.org/how-loud-are-mud-tires/): Mud-terrain noise measured against what manufacturers actually publish, and why the tire gets louder as large tread blocks wear unevenly.
- [Mud Tire Load Range Explained](https://mudtires.org/mud-tire-load-range-explained/): Load range C, D, E and F explained: what the letters commit a manufacturer to, why ply rating is not a ply count, and how width changes the pressure.
- [Mud Tire Sidewalls: 3-Ply vs 2-Ply](https://mudtires.org/mud-tire-sidewall-plies/): Ply rating is not a ply count, but the real number is moulded into every sidewall by federal law. Which manufacturers publish it, and which do not.
- [Mud Tire Specification Database](https://mudtires.org/mud-tire-specifications/): Diameter, weight, tread depth and load rating for six mud-terrain tires in four common sizes, from one source read on one day, so every row compares.
- [Mud Tire Warranties Compared](https://mudtires.org/mud-tire-warranties-compared/): Almost no mud-terrain carries a treadwear warranty. What the workmanship warranties actually cover, for how long, and what voids an adjustment.
- [Towing on Mud Tires: What Actually Changes](https://mudtires.org/towing-on-mud-tires/): Tread contributes nothing to load capacity. Load index, speed ratings (several common mud-terrain sizes are rated P, not Q) and how to set pressure.
- [What the Spec Sheets Get Wrong](https://mudtires.org/spec-sheet-errors/): Several widely repeated mud-terrain specs are not manufacturer claims at all. Every discrepancy we caught across 22 comparisons, and how to check them.
- [When to Replace Mud Tires](https://mudtires.org/when-to-replace-mud-tires/): How to read wear on a mud-terrain: tread depth thresholds, cupping, uneven wear between grooves, and what voids a warranty adjustment.

## Tools

- [Mud Tire Price Tracker](https://mudtires.org/mud-tire-price-tracker/): What mud-terrain tires actually cost over time. Nine tracked listings, re-read every week against the same retailer and sizes. Baseline September 2026.
- [Tire Size Calculator for Mud Tires](https://mudtires.org/tire-size-calculator/): Compare tire sizes: diameter change, speedometer error, ground clearance, mud-terrains in the new size with measured weights, and fuel cost from your MPG.

## About this site

- [Contact](https://mudtires.org/contact/): Email Cole Harlan at cole@mudtires.org to report a wrong tire figure, ask a fitment question, or send a manufacturer spec sheet. Every message is read.
- [Corrections](https://mudtires.org/corrections/): Every correction Mud Tires has made to a published figure, newest first: what each page said before, what it says now, and the source for the fix.
- [Our Methodology](https://mudtires.org/methodology/): How we source every figure: manufacturer specifications first, retailer databases for price only, and a note whenever a number cannot be verified.
- [Who writes this](https://mudtires.org/who-writes-this/): Written by Cole Harlan (a pen name), who compiles and audits published mud-terrain specs. No first-hand testing claimed; every figure is traced and dated.

## Source link check

- [Source link check (monthly)](https://mudtires.org/methodology/#source-check): every outside source link checked each month; last check October 4, 2026. A source that moves is re-linked; one that is taken down is replaced with a labelled Internet Archive copy, never silently removed. Includes a running check log.
- [Source link check log (JSON)](https://mudtires.org/data/source-check.json): the same numbers as JSON (CC BY 4.0): links checked, working, dead, waiting for a hand check, each fix, one history row per month.

## Optional

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