275/55R21 Compatible Tire Sizes

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The 275/55R21 has an overall diameter of 83.6 cm. The T&RA recommended rim width for a 275mm section width is 8–10 inches, with a measuring rim of 9 inches. This page lists 72 compatible alternatives within 3% of the original diameter. Sizes are organized by wheel diameter. Within each section, the closest match per treadwidth is shown in italics. All sizes are theoretical and there may not be an actual production tire for the size.

This is a light truck (LT) size. Most tire retailers include both passenger-metric and LT-metric tires when searching this size — for example, searching 275/55R21 will typically surface LT275/55R21 results as well. Load range and ply rating vary between metric types; verify the load index matches your vehicle's requirements before purchasing.

Use our interactive tire size compatibility lookup →

275/55R21 Specifications

Recommended Rim Width
8–10 in
Measuring: 9 in
8" 10"
Sidewall Height
15.1 cm
Visible Sidewall
13.4 cm
5.3 in
Overall Diameter
83.6 cm
32.9 in

Current Tire Pricing

TireSizePrice/Tire
Michelin Defender LTX M/S2Highway All-Season275/55R21$395.99
Yokohama Geolandar A/T4On-Road All-Terrain275/55R21$455.99

Price availability updated May 2026. Actual prices may vary.

Tire Recommendations

Ultra High Performance All-Season

Year-round daily driving with performance capability

Michelin Pilot Sport All Season 4

Treadwear: 540

Grand Touring All-Season

Comfortable, long-wearing all-season tires for daily driving

Michelin CrossClimate2

Treadwear: 640

Goodyear Assurance WeatherReady2

Treadwear: 700

Off-Road Max Traction

Maximum off-road traction for serious rock, mud, and trail use

Yokohama Geolandar M/T G003

Treadwear: None

BFGoodrich Mud-Terrain T/A KM3

Treadwear: None

How to Use This Information

  • Stay within 3%: All listed tire sizes maintain proper speedometer accuracy and vehicle dynamics
  • Consider aspect ratio: Lower numbers mean shorter sidewalls (better handling, harsher ride)
  • Treadwidth matters: Wider tires typically offer more grip but may reduce fuel economy
  • Check clearance: Ensure your vehicle has adequate wheel well and suspension clearance

Want to look up compatibility for a different tire size? Use our tire size compatibility lookup