Tire Size Guide

275/45R21 Tires

Compare 34 available models across 7 categories, then confirm fitment for your vehicle.

Our Top Pick in 275/45R21
Michelin Pilot Sport All Season 4
Ultra High Performance SummerPerformance

The Michelin Pilot Sport All Season 4 is a strong contender for drivers who prioritize grip and longevity in an ultra-high-performance summer tire.

Dry grip rating of 9 matches the best in the ultra-high-performance summer category, making it ideal for spirited driving. Wet grip score of 9 exceeds the category average of 7.6, providing confidence in rainy conditions. 45,000-mile treadwear warranty is well above the category average of 37,754 miles, offering longer-lasting performance.
78Spec score (est.)
Full analysis
13 models

Best Ultra High Performance Summer Tires in 275/45R21

All Ultra High Performance Summer tires

The Michelin Pilot Sport All Season 4 is a strong contender for drivers who prioritize grip and longevity in an ultra-high-performance summer tire.

  • Dry grip rating of 9 matches the best in the ultra-high-performance summer category, making it ideal for spirited driving.
  • Wet grip score of 9 exceeds the category average of 7.6, providing confidence in rainy conditions.

If comfort is a top priority, consider alternatives with higher comfort scores like the Pirelli P Zero (PZ4).

45,000 mi warrantyTreadwear 540Traction AA
Spec score78estimated
Details

The Goodyear Eagle F1 Asymmetric 5 is a compelling choice for those who prioritize wet grip and longevity in an ultra-high-performance summer tire.

  • Wet grip score of 9 significantly exceeds the category average of 7.6, making it a strong performer in rainy conditions.
  • Handling score of 8 aligns with the category's focus on responsive driving dynamics.

The T speed rating is a mismatch for an ultra-high-performance tire, which may deter high-speed enthusiasts.

Treadwear 300Traction AA
Spec score76estimated
Details

The Goodyear Eagle F1 Asymmetric 5 RunOnFlat is a solid choice for those prioritizing wet grip, with its score of 9 leading the category average of 7.6.

  • Wet grip score of 9 significantly exceeds the category average of 7.6, making it a strong performer in rainy conditions.
  • Dry grip and handling both score 8, making it competitive in performance driving scenarios.

The lack of a treadwear warranty and a lower dry grip rating than some competitors may deter those seeking maximum dry performance and assurance on longevity.

Treadwear 300Traction AA
Spec score76estimated
Details

The Pirelli P Zero (PZ4) is well-suited for drivers who prioritize wet grip in their ultra high performance summer tires.

  • Wet grip score of 9 exceeds the ultra high performance summer category average of 7.6, making it a strong performer in rainy conditions.
  • Dry grip and handling both score 8, which aligns well with the category's focus on performance driving.

The lack of a treadwear warranty could be a concern for buyers looking for a guaranteed lifespan from their performance tires.

Treadwear 280Traction AA
Spec score75estimated
Details
Show 9 more ultra high performance summer options
Michelin Pilot Sport 4 SUV

20,000 mi warranty · Treadwear 300

67
Michelin Latitude Sport 3

20,000 mi warranty · Treadwear 220

53
Pirelli P Zero PZ4 Sport

Specs on detail page

8 models

Best Touring All-Season Tires in 275/45R21

All Touring All-Season tires

The Bridgestone Alenza AS Ultra is a solid choice for those who value longevity and comfort in their touring all-season tires.

  • Impressive treadlife with a 9.5 score and an 80,000-mile warranty, significantly above the category average of 64,578 miles.
  • Wet grip score of 7.5 exceeds the category average of 6.9, providing reliable performance in rainy conditions.

The dry grip performance is slightly below average, which may not suit drivers prioritizing maximum dry road performance.

80,000 mi warrantyTreadwear 800Traction A
Spec score83estimated
Details

The Bridgestone Alenza A/S 02 is tailored for drivers seeking a balance of longevity and comfort in a touring all-season tire.

  • Treadwear warranty of 65,000 miles slightly exceeds the category average of 64,578 miles, offering a marginally longer lifespan.
  • Wet grip score of 7.5 outperforms the category average of 6.9, making it a reliable choice for rainy conditions.

The lower dry grip score compared to competitors like the Continental ProContact TX may deter those who value handling precision.

Treadwear 700Traction A
Spec score80estimated
Details

The Pirelli Scorpion WeatherActive is a strong contender for those seeking a touring all-season tire with a focus on wet grip and comfort.

  • Treadlife score of 8.7 aligns well with its 60,000-mile warranty, offering solid longevity for a touring tire.
  • Wet grip rating of 7.5 exceeds the category average of 6.9, indicating reliable performance in rainy conditions.

The lower dry grip rating may disappoint those who prioritize spirited driving on dry roads.

60,000 mi warrantyTreadwear 700Traction A
Spec score75estimated
Details

The Pirelli Scorpion Verde All Season is a solid choice for drivers who value comfort and noise reduction in their daily commute.

  • Above-average wet grip score of 7.5, outperforming the category benchmark of 6.9.
  • Comfort and noise scores both at 8, matching the category averages for a smooth and quiet ride.

The lack of a treadwear warranty and a low UTQG rating of 520 suggest a shorter lifespan, which can increase long-term costs.

Treadwear 520Traction A
Spec score73estimated
Details
Show 4 more touring all-season options
Yokohama Geolandar X-CV

50,000 mi warranty · Treadwear 520

68
66
66
6 models

Best Grand Touring All Season Tires in 275/45R21

All Grand Touring All Season tires

The Assurance WeatherReady2 is a solid choice for drivers who value comfort and quietness in a grand touring all-season tire.

  • Comfort and noise scores both at 8, matching the category averages — expect a smooth and quiet ride typical of grand touring tires.
  • Treadwear rating of 700 and a 60,000-mile warranty slightly undercut the category average treadlife but still offer solid longevity.

The R speed rating limits performance potential compared to higher-rated competitors, which may deter performance-oriented drivers.

60,000 mi warrantyTreadwear 700Traction A
Spec score75estimated
Details

The Goodyear Eagle Touring RunOnFlat is best suited for drivers who value comfort and noise reduction on long trips, with its scores of 8 matching the category benchmarks.

  • Comfort and noise scores of 8 align with the category average, making it a quiet and smooth choice for long drives.
  • Wet grip rating of 7.5 slightly exceeds the category average of 7.4, providing reliable performance in rainy conditions.

The lack of a treadwear warranty could be a significant downside for buyers concerned about long-term cost of ownership.

Treadwear 500Traction A
Spec score73estimated
Details

The Michelin Primacy Tour A/S is a solid choice for drivers who value dry grip and handling.

  • Treadlife warranty of 55,000 miles is competitive, though slightly below the category average of 64,578 miles.
  • Dry grip score of 8.5 outperforms the category average of 7.8, providing reliable traction on dry roads.

The lower UTQG treadwear rating of 540 compared to the category average suggests a shorter lifespan, which could be a concern for high-mileage drivers.

55,000 mi warrantyTreadwear 540Traction A
Spec score70estimated
Details
Michelin CrossClimate2Comfort3PMSF Snow

The Michelin CrossClimate2 is a good match for drivers who value comfort and quietness in their grand touring all-season tires.

  • Comfort and noise scores of 8 match the category average, ensuring a smooth and quiet ride typical of grand touring all-season tires.
  • Treadlife rating of 8.17 and a 60,000-mile warranty provide solid longevity, slightly below the category average but still competitive.

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

60,000 mi warrantyTreadwear 640Traction B
Spec score67estimated
Details
Show 2 more grand touring all season options
Vredestein Quatrac Pro+

50,000 mi warranty · Treadwear 400

65
Toyo Celsius Sport

40,000 mi warranty · Treadwear 380

62
2 models

Best Performance All-Season Tires in 275/45R21

All Performance All-Season tires
Advanta HPZ-02Performance

The Advanta HPZ-02 is a compelling choice for drivers prioritizing wet grip, with its score of 9 well above the category average of 7.2.

  • Wet grip score of 9 significantly surpasses the category average of 7.2, making it a strong performer in rainy conditions.
  • Treadwear warranty of 50,000 miles is competitive, though slightly below the category average of 51,717 miles.

The UTQG treadwear rating of 420 indicates a shorter lifespan compared to many competitors, which could lead to more frequent replacements.

50,000 mi warrantyTreadwear 420Traction AA
Spec score76estimated
Details

The Falken Azenis FK460 A/S is a compelling choice for drivers who prioritize dry grip and handling precision.

  • Dry grip and handling both score a perfect 10, making it a standout choice for spirited driving.
  • Treadlife warranty of 50,000 miles significantly exceeds the category average of 37,754 miles.

Wet grip performance lags behind competitors like the Michelin Pilot Sport 4S, which might be a dealbreaker for those in rainy climates.

50,000 mi warrantyTreadwear 500Traction A
Spec score72estimated
Details
2 models

Best All-Terrain Tires in 275/45R21

All All-Terrain tires

The Pirelli Scorpion Zero All Season is a solid choice for those who need a durable all-terrain tire with a focus on treadlife and handling.

  • Off-road traction is supported by a robust tread pattern and a UTQG treadwear rating of 500, promising durability.
  • Treadwear warranty of 60,000 miles exceeds the category average of 55,717 miles, offering longer coverage than many competitors.

If severe winter performance is a priority, the lack of 3PMSF certification means this tire might not meet your needs.

Treadwear 500Traction A
Spec score73estimated
Details

The Cooper Discoverer CrossRange is a solid choice for those who prioritize off-road traction, thanks to its A traction grade.

  • Off-road traction is a strong point with its A traction grade, making it suitable for varied terrains.
  • Wet grip score of 6 outperforms the category average of 5.2, providing better performance in rainy conditions.

Lack of a treadwear warranty may deter buyers seeking assurance on tire longevity.

Treadwear 400Traction A
Spec score69estimated
Details
2 models

Best Winter Tires in 275/45R21

All Winter tires

The Michelin X-Ice Snow SUV is a solid pick for SUV owners who need a dependable winter tire with a good balance of snow traction and treadlife.

  • Snow traction score of 8 matches the winter category average, ensuring reliable performance in snowy conditions.
  • Treadwear warranty of 40,000 miles offers a solid lifespan for a winter tire, reducing the frequency of replacements.

Limited ice traction data makes it a less certain choice for those who frequently encounter icy roads.

40,000 mi warrantyTraction NONE
Spec scoreestimated
Details

The Pirelli Scorpion Winter is a solid choice for those who prioritize dry grip and treadlife in a winter tire.

  • 60,000-mile treadwear warranty exceeds the winter category average of 54,431 miles, offering longer usage before replacement.
  • Snow traction score of 8 matches the category average, ensuring reliable performance in typical winter conditions.

Lack of ice traction data may be a concern for those facing frequent icy conditions.

Traction NONE
Spec scoreestimated
Details
1 model

Best Max Performance Summer Tires in 275/45R21

All Max Performance Summer tires

The Toyo Proxes Sport 2 is a solid choice for drivers who prioritize wet grip in a max performance summer tire.

  • Wet grip score of 9 surpasses the category average of 7.9, making it a strong performer in rainy conditions.
  • Dry grip and handling both score 8, closely matching the category average, which ensures reliable performance on dry roads.

The lower UTQG treadwear rating of 240 suggests a shorter lifespan, which may not suit those seeking longer-lasting performance tires.

25,000 mi warrantyTreadwear 240Traction AA
Spec score62estimated
Details
Fitment

Vehicles Using 275/45R21

+ 10 more vehicles use this size

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Popular Brands in 275/45R21

Size decoded

What 275/45R21 Means

275/45R21 designates a tire 275 mm (10.8") wide with a sidewall 45% as tall as it is wide — about 124 mm (4.9") — mounted on a 21-inch wheel. That works out to an overall diameter of roughly 30.7", a circumference of about 96.6", and approximately 656 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

124 mm

Sidewall height

30.7"

Overall diameter

96.6"

Circumference

656

Revs per mile

Of the 34 275/45R21 tire models we track, the most common category is ultra high performance summer (13 models), followed by touring all-season (8) — a good indicator of the kind of vehicles and driving this size is designed for.

Before you buy

Frequently Asked Questions

What does 275/45R21 mean?
275/45R21 breaks down as follows: 275mm is the tire's section width (the widest point), 45 is the aspect ratio (sidewall height as a percentage of width), R means radial construction, and 21 is the wheel diameter in inches.
What vehicles use 275/45R21 tires?
275/45R21 is a common fitment for vehicles like the 2025 Mercedes-Benz GLS580, 2025 Land Rover Discovery, 2025 Mercedes-Benz GLE350, 2025 Mercedes-Benz GLE53 AMG and others. Always confirm your specific trim's fitment before purchasing.
How tall is a 275/45R21 tire?
A 275/45R21 tire has a sidewall height of about 124 mm (4.9") and an overall diameter of roughly 30.7", turning approximately 656 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

275/45R21 Research Guides

Confirm 275/45R21 fits your vehicle

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