Tire Size Guide

275/40R21 Tires

Compare 27 available models across 7 categories, then confirm fitment for your vehicle.

Our Top Pick in 275/40R21
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
11 models

Best Ultra High Performance Summer Tires in 275/40R21

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 Yokohama ADVAN Sport V105 is tailored for drivers who demand top-notch dry and wet grip, boasting perfect scores in both dry grip and handling.

  • Perfect dry grip score of 10, surpassing the category average of 8.7, ideal for spirited driving on dry roads.
  • Wet grip rating of 9 is significantly above the category average of 7.6, enhancing performance in rainy conditions.

Average comfort and noise levels may disappoint those looking for a more refined ride experience.

Treadwear 240Traction AA
Spec score78estimated
Details

The Pirelli P Zero Run Flat (PZ4) is a solid choice for those who prioritize wet grip, boasting a score of 9, which is well above the category average of 7.6.

  • Wet grip score of 9 is notably above the category average of 7.6, making it a strong performer in rainy conditions.
  • Treadlife score of 7.5 is respectable for an ultra-high-performance summer tire, given the category's focus on grip and handling.

The 'R' speed rating may not satisfy drivers seeking the highest speed capabilities typical of ultra-high-performance summer tires.

Treadwear 320Traction 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 7 more ultra high performance summer options
73
Yokohama ADVAN Sport V107E

50,000 mi warranty · Treadwear 240

66
Michelin Pilot Sport 4 SUV ZP

20,000 mi warranty · Treadwear 220

53
Michelin Pilot Sport EV

20,000 mi warranty · Treadwear 220

46
Pirelli P Zero PZ4 Sport

Specs on detail page

6 models

Best Touring All-Season Tires in 275/40R21

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 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 600Traction A
Spec score76estimated
Details

The Uniroyal Tiger Paw Touring A/S is a solid choice for drivers who prioritize dry and wet grip in a touring all-season tire.

  • Treadwear warranty of 65,000 miles matches the category average, providing reliable longevity.
  • Dry grip score of 8.5 exceeds the category average of 7.8, offering solid performance on dry roads.

The UTQG treadwear rating of 500 suggests a shorter lifespan compared to category norms, affecting long-term value.

65,000 mi warrantyTreadwear 600
Spec score74estimated
Details

The Continental CrossContact RX is a comfortable and quiet touring all-season tire, well-suited for drivers who prioritize ride quality.

  • Comfort and noise scores of 8 match the category benchmarks, making it a solid choice for a quiet and smooth ride.
  • Wet grip rating of 7.5 exceeds the category average of 6.9, providing better-than-average performance in rainy conditions.

Lack of a treadwear warranty and low UTQG treadwear rating suggest higher long-term costs compared to competitors with warranties.

Treadwear 480Traction A
Spec score72estimated
Details
Show 2 more touring all-season options
Hankook iON evo AS SUV

50,000 mi warranty · Treadwear 600

70
Yokohama Geolandar X-CV

50,000 mi warranty · Treadwear 520

68
4 models

Best Winter Tires in 275/40R21

All Winter tires

The Nokian Hakkapeliitta R5 SUV is a solid choice for snowbelt SUV owners who prioritize snow traction and longevity.

  • Snow traction score of 8 matches the winter category's expectations, making it reliable for snowy conditions.
  • Treadwear warranty of 65,000 miles exceeds the category average of 54,431 miles, offering longer service life than many winter tires.

Lack of ice traction data might be a concern for those prioritizing icy surface performance.

60,000 mi warranty
Spec score72estimated
Details

The Michelin Pilot Alpin 5 SUV is a solid choice for SUV owners who need dependable snow traction and a reasonable treadwear warranty.

  • Snow traction score of 8, which is solid for winter conditions and ensures reliable performance in snowy environments.
  • Treadwear warranty of 30,000 miles is a plus for a winter tire, providing some assurance on longevity.

If you prioritize a quiet and comfortable ride above all else, this tire's average noise and comfort scores might not meet your expectations.

30,000 mi warranty
Spec score54estimated
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

The Pirelli Scorpion Winter Run Flat is a solid choice for drivers who prioritize snow traction and the peace of mind that comes with run-flat technology.

  • Snow traction score of 8 is solid, meeting the needs of drivers in areas with frequent snowfall.
  • Comfort rating of 6.2 aligns with the category average, making it a reasonable choice for daily winter driving.

The lack of a treadwear warranty and below-average wet grip make it less appealing for those who drive frequently on wet winter roads.

Traction NONE
Spec scoreestimated
Details
3 models

Best Grand Touring All Season Tires in 275/40R21

All Grand Touring All Season tires
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
Vredestein Quatrac Pro+Comfort3PMSF Snow

The Vredestein Quatrac Pro+ is best suited for drivers who value comfort and noise reduction in their daily drives.

  • Comfort and noise scores of 8 match the grand touring all-season category averages, making for a quiet and smooth ride.
  • Wet grip rating of 7.5 slightly exceeds the category average of 7.4, suggesting reliable performance in rainy conditions.

The 50,000-mile treadwear warranty is significantly below the category average, which could mean more frequent replacements.

50,000 mi warrantyTreadwear 400Traction A
Spec score65estimated
Details

The Continental PremiumContact 6 SSR is a solid choice for drivers who value comfort and noise reduction in their grand touring all-season tires.

  • Comfort and noise ratings of 8 align with the category benchmarks, making it a quiet and smooth ride for long-distance travel.
  • Wet grip score of 7.5 slightly exceeds the category average of 7.4, which helps maintain traction during rainy conditions.

The lack of a treadwear warranty and low treadwear rating mean potentially higher long-term costs compared to competitors with warranties.

Treadwear 280Traction A
Spec score65estimated
Details
1 model

Best All-Terrain Tires in 275/40R21

All All-Terrain tires

The Pirelli Scorpion Verde is a solid choice for all-terrain enthusiasts who value wet grip and treadwear warranty.

  • Off-road traction benefits from a wet grip score of 8, significantly above the category average of 5.2.
  • The 70,000-mile treadwear warranty is well above the all-terrain category average of 55,717 miles, promising longer use.

The UTQG treadwear rating of 400 could mean a shorter lifespan for those who prioritize maximum durability.

Treadwear 400Traction AA
Spec score79estimated
Details
1 model

Best Max Performance Summer Tires in 275/40R21

All Max Performance Summer tires

The PremiumContact 6 is a strong choice for drivers who prioritize grip and handling in both dry and wet conditions.

  • Dry grip score of 9, which is above the category average of 8.2, making it a strong performer in dry conditions.
  • Wet grip also scores a 9, exceeding the average of 7.9, ensuring reliable performance during rain.

Average comfort and noise scores may deter those looking for a quieter, more comfortable ride in a max performance summer tire.

Treadwear 280Traction AA
Spec score75estimated
Details
1 model

Best Performance All-Season Tires in 275/40R21

All Performance All-Season tires

The ExtremeContact DWS 06 Plus is a strong contender for drivers who prioritize treadlife and dry handling in a performance all-season tire.

  • Treadlife score of 9.5 is significantly above the category average, supported by a 50,000-mile warranty.
  • Dry grip and handling both score 8, making it a solid choice for spirited driving in various conditions.

Wet grip performance lags slightly behind some competitors, which could be a concern in regions with frequent rain.

50,000 mi warrantyTreadwear 560Traction A
Spec score73estimated
Details
Fitment

Vehicles Using 275/40R21

+ 5 more vehicles use this size

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Popular Brands in 275/40R21

Size decoded

What 275/40R21 Means

275/40R21 designates a tire 275 mm (10.8") wide with a sidewall 40% as tall as it is wide — about 110 mm (4.3") — mounted on a 21-inch wheel. That works out to an overall diameter of roughly 29.7", a circumference of about 93.2", and approximately 680 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

110 mm

Sidewall height

29.7"

Overall diameter

93.2"

Circumference

680

Revs per mile

Of the 27 275/40R21 tire models we track, the most common category is ultra high performance summer (11 models), followed by touring all-season (6) — a good indicator of the kind of vehicles and driving this size is designed for.

Before you buy

Frequently Asked Questions

What does 275/40R21 mean?
275/40R21 breaks down as follows: 275mm is the tire's section width (the widest point), 40 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 275/40R21 tires?
275/40R21 is a common fitment for vehicles like the 2026 BMW X5 xDrive, 2026 BMW X6 xDrive, 2026 BMW X5, 2025 Acura MDX and others. Always confirm your specific trim's fitment before purchasing.
How tall is a 275/40R21 tire?
A 275/40R21 tire has a sidewall height of about 110 mm (4.3") and an overall diameter of roughly 29.7", turning approximately 680 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

275/40R21 Research Guides

Confirm 275/40R21 fits your vehicle

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