Tire Size Guide

305/55R20 Tires

Compare 50 available models across 2 categories, then confirm fitment for your vehicle.

Our Top Pick in 305/55R20
BFGoodrich Mud-Terrain T/A KM3
All-TerrainPerformance

The BFGoodrich Mud-Terrain T/A KM3 is tailored for off-road enthusiasts who prioritize traction in rugged conditions.

Off-road traction is a strong point, with the design focused on rugged terrains and mud performance. Handling score of 6.5 aligns with the category average, providing reliable control on varied surfaces. Comfort score matches the category average of 6, making it a reasonable choice for mixed-use driving.
73Spec score (est.)
Full analysis
48 models

Best All-Terrain Tires in 305/55R20

All All-Terrain tires

The BFGoodrich Mud-Terrain T/A KM3 is tailored for off-road enthusiasts who prioritize traction in rugged conditions.

  • Off-road traction is a strong point, with the design focused on rugged terrains and mud performance.
  • Handling score of 6.5 aligns with the category average, providing reliable control on varied surfaces.

The lack of a treadwear warranty and lower wet grip score could be significant drawbacks for those prioritizing longevity and wet weather performance.

Treadwear 500Traction A
Spec score73estimated
Details

The Recon Grappler A/T by Nitto is a solid choice for those who prioritize off-road capability.

  • Off-road traction is a strong suit thanks to its aggressive tread design, making it suitable for varied terrains.
  • Treadlife is backed by a 55,000-mile warranty, which is competitive within the all-terrain segment.

Lacks 3PMSF certification, making it less suitable for drivers who need winter-capable all-terrain tires.

55,000 mi warrantyTreadwear 600Traction A
Spec score72estimated
Details

The Kumho Road Venture AT52 is a solid choice for off-road enthusiasts who frequently encounter snowy conditions, thanks to its 3PMSF rating.

  • Off-road traction benefits from the 3PMSF rating, providing better performance in snow compared to non-3PMSF all-terrain options.
  • Treadlife score of 9 and a 50,000-mile warranty offer above-average durability for the all-terrain category.

The 50,000-mile warranty is less than the category average, which may not suit high-mileage drivers seeking maximum value.

50,000 mi warrantyTreadwear 680Traction A
Spec score72estimated
Details
Nexen Roadian ATXValue3PMSF Snow

The Nexen Roadian ATX is a strong contender for those who prioritize durability and off-road capability.

  • Off-road traction benefits from the 3PMSF rating, indicating solid performance in snow and loose terrain.
  • Treadlife warranty of 70,000 miles is significantly above the category average of 55,717 miles, offering long-term durability.

If noise levels are a key concern, the Roadian ATX may not be the best choice due to its average noise rating.

60,000 mi warrantyTreadwear 560Traction A
Spec score70estimated
Details
Show 44 more all-terrain options
Bridgestone Dueler A/T Ascent

60,000 mi warranty · Treadwear 640

69
Falken WildPeak A/T4W

60,000 mi warranty · Treadwear 660

69
Sumitomo Encounter AT

60,000 mi warranty · Treadwear 660

69
Fuzion All-Terrain

50,000 mi warranty · Treadwear 540

69
Falken Rubitrek A/T01

55,000 mi warranty · Treadwear 660

68
BFGoodrich All-Terrain T/A KO3

50,000 mi warranty · Treadwear 500

68
Nitto Terra Grappler G3

55,000 mi warranty · Treadwear 600

67
Cooper Discoverer Rugged Trek

55,000 mi warranty · Treadwear 600

67
Vredestein Pinza AT

50,000 mi warranty · Treadwear 650

67
General Grabber A/TX

50,000 mi warranty · Treadwear 640

66
66
Toyo Open Country A/T III

50,000 mi warranty · Treadwear 600

65
Mickey Thompson Baja Boss A/T

50,000 mi warranty · Treadwear 600

65
Yokohama Geolandar A/T G015

50,000 mi warranty · Treadwear 600

65
Bridgestone Dueler A/T Revo 3

50,000 mi warranty · Treadwear 540

64
Toyo Open Country R/T Trail

45,000 mi warranty · Treadwear 600

64
Nokian Outpost NAT

60,000 mi warranty

63
Toyo Open Country R/T

45,000 mi warranty · Treadwear 500

62
Yokohama Geolandar A/T4

55,000 mi warranty · Treadwear 500

58
Milestar Patagonia A/T R

50,000 mi warranty · Treadwear 500

57
Goodyear Wrangler DuraTrac RT

50,000 mi warranty · Treadwear 500

56
Yokohama Geolandar A/T XD

50,000 mi warranty · Treadwear 500

56
Yokohama Geolandar X-AT

45,000 mi warranty · Treadwear 500

54
Milestar Patagonia X/T

40,000 mi warranty · Treadwear 500

54
Westlake SL369 All Terrain

40,000 mi warranty · Treadwear 400

48
Firestone Destination X/T

50,000 mi warranty

Falken WildPeak R/T01

50,000 mi warranty

Toyo Tire Open Country R/T

45,000 mi warranty

Atturo Trail Blade X/T

45,000 mi warranty

Nexen Roadian MTX

Specs on detail page

Hankook Dynapro MT2 RT05

Specs on detail page

Hankook Dynapro XT

Specs on detail page

Mickey Thompson Baja Boss M/T

Specs on detail page

Falken Wildpeak M/T01

Specs on detail page

Nitto Exo Grappler AWT

Specs on detail page

Toyo Tire Open Country M/T

Specs on detail page

Milestar Patagonia M/T 02

Specs on detail page

General Grabber X3

Specs on detail page

Yokohama Geolandar M/T G003

Specs on detail page

Nitto Trail Grappler M/T

Specs on detail page

Kumho Road Venture MT71

Specs on detail page

Cooper Discoverer STT PRO

Specs on detail page

2 models

Best Highway All-Season Truck Tires in 305/55R20

All Highway All-Season Truck tires

The Nitto NT420V is best suited for drivers who prioritize long treadlife and solid dry performance in a highway all-season truck tire.

  • High treadlife rating with a 70,000-mile warranty, exceeding the category average of 61,048 miles.
  • Dry grip and handling both score 7.5, making it a reliable choice for on-road performance.

Wet grip performance is below average, which could be a concern for drivers in rainy climates.

Spec scoreestimated
Details

The Nitto Dura Grappler is a solid choice for highway drivers who value long treadlife and dry road performance.

  • Treadlife score of 8.3 is strong, backed by a 60,000-mile warranty, which is just shy of the category average.
  • Dry grip rating of 7.5 is competitive, providing reliable performance on dry highways.

The wet grip performance is below average, which might be a dealbreaker for drivers in consistently rainy regions.

Spec scoreestimated
Details
Fitment

Vehicles Using 305/55R20

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Popular Brands in 305/55R20

Size decoded

What 305/55R20 Means

305/55R20 designates a tire 305 mm (12.0") wide with a sidewall 55% as tall as it is wide — about 168 mm (6.6") — mounted on a 20-inch wheel. That works out to an overall diameter of roughly 33.2", a circumference of about 104.3", and approximately 607 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

168 mm

Sidewall height

33.2"

Overall diameter

104.3"

Circumference

607

Revs per mile

Of the 50 305/55R20 tire models we track, the most common category is all-terrain (48 models), followed by highway all-season truck (2) — a good indicator of the kind of vehicles and driving this size is designed for.

Before you buy

Frequently Asked Questions

What does 305/55R20 mean?
305/55R20 breaks down as follows: 305mm is the tire's section width (the widest point), 55 is the aspect ratio (sidewall height as a percentage of width), R means radial construction, and 20 is the wheel diameter in inches.
What vehicles use 305/55R20 tires?
305/55R20 is a common fitment for vehicles like the 2021 Ford F-150, 2020 Ford F-150, 2019 Ford F-150, 2018 Ford F-150. Always confirm your specific trim's fitment before purchasing.
How tall is a 305/55R20 tire?
A 305/55R20 tire has a sidewall height of about 168 mm (6.6") and an overall diameter of roughly 33.2", turning approximately 607 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

305/55R20 Research Guides

Confirm 305/55R20 fits your vehicle

Wheel size can vary by trim and option package. Enter your year, make, model, and trim to verify fitment before you order.

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