305/55R20 tires are in stock now with 37 options spanning premium, performance, and value brands including Nitto, Falken, Toyo, Nexen, Hercules, and more. From street-friendly all-terrains to aggressive mud-terrains, this popular light-truck and SUV size is available with free shipping on every order, Affirm financing, and fast delivery from a nationwide network. Compare seasons, load and speed ratings, and pricing all in one place, or browse all tires to explore other fitments.
Shop 305/55R20 Tires In Stock
Showing 36 in stock.
What 305/55R20 tires means
Reading the code left to right: 305 is the section width in millimeters (about 12.01 inches), the widest point of the tire. 55 is the aspect ratio, meaning the sidewall height is 55% of the section width — that works out to roughly 167.8 mm (about 6.6 inches) of sidewall. The R indicates radial construction, and 20 is the wheel diameter in inches.
Put together, a 305/55R20 has an overall diameter of about 33.21 inches and turns roughly 607 revolutions per mile. Those numbers matter to a buyer for real reasons: overall diameter affects ground clearance and how a tire fills the wheel well, revolutions per mile ties directly to speedometer and odometer accuracy, and the tall-but-not-huge sidewall balances a planted feel on pavement with cushioning over rough surfaces.
Vehicles & uses
This is a wide, tall footprint most commonly fitted to full-size and mid-size pickups, SUVs, and Jeeps. The generous section width increases the contact patch for traction, while the moderate sidewall balances sporty looks with off-road capability. It's a favorite among drivers who want a slightly larger, more aggressive stance without stepping up to an extreme diameter. Always confirm the size against your vehicle's recommended fitment and clearance before ordering.
Brands & options in 305/55R20 tires
Premium and well-known names lead the lineup. From Nitto, choose the on-road-friendly Terra Grappler G3, the rugged all-terrain Ridge Grappler, the versatile Recon Grappler A/T, or the aggressive Trail Grappler M/T. Toyo offers the popular Open Country A/T III, and Falken brings the Wildpeak A/T4W.
Performance-focused all- and mud-terrain choices include the Venom Power Terra Hunter R/T+ and Terra Hunter X/T, plus the RBP Repulsor R/T. Value-minded shoppers can look at Nexen's Roadian ATX and Hercules's TIS Offroad RT1. Additional options come from General Tire, Kumho, Ironman, Nokian, Laufenn, and AMP.
How to choose
Season
Match the tire to your climate and driving. All-season and all-terrain designs suit year-round use for most truck and SUV owners; dedicated winter tires are worth it in hard snow and ice; and mud-terrain patterns trade some on-road quiet for off-road bite.
Treadwear & UTQG
The UTQG treadwear grade offers a rough comparison of expected tread life within a brand's lineup, alongside traction and temperature grades. Check each tire's mileage warranty where offered as another durability signal.
Load index & speed rating
Confirm the load index carries your vehicle's weight and the speed rating meets your needs — both appear in the code after the size (for example, 116T). For heavier trucks and towing, look for LT-metric options with higher load capacity.
Frequently Asked Questions
What does 305/55R20 mean?
It describes a tire that is 305 mm wide with a sidewall height 55% of that width, built as a radial (R) to fit a 20-inch wheel. That yields about a 33.21-inch overall diameter and roughly 607 revolutions per mile.
How much do 305/55R20 tires cost?
Prices currently range from about $249.58 to $592.00 each, depending on brand, tread design, and construction.
How many 305/55R20 tires are available?
There are 37 in-stock options across brands like Nitto, Falken, Toyo, Nexen, Hercules, and more, all with free shipping and Affirm financing.