Tire Size Guide

275/30R21 Tires

Compare 16 available models across 4 categories, then confirm fitment for your vehicle.

Our Top Pick in 275/30R21
Bridgestone Potenza Sport
Ultra High Performance SummerPerformance

The Bridgestone Potenza Sport is designed for drivers who demand top-tier performance in dry and wet conditions.

Perfect dry grip score of 10, surpassing the category average of 8.7, ideal for aggressive cornering and high-speed stability. Wet grip rating of 9 is well above the category benchmark of 7.6, offering reliable performance in rainy conditions. Handling score of 10 ensures precise steering response, making it a strong choice for spirited driving.
80Spec score (est.)
Full analysis
11 models

Best Ultra High Performance Summer Tires in 275/30R21

All Ultra High Performance Summer tires

The Bridgestone Potenza Sport is designed for drivers who demand top-tier performance in dry and wet conditions.

  • Perfect dry grip score of 10, surpassing the category average of 8.7, ideal for aggressive cornering and high-speed stability.
  • Wet grip rating of 9 is well above the category benchmark of 7.6, offering reliable performance in rainy conditions.

Average comfort and noise levels may deter those seeking a more refined and quiet driving experience.

Treadwear 300Traction AA
Spec score80estimated
Details

The Hankook Ventus V12 evo2 is a solid choice for drivers who need strong wet grip performance 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.
  • Treadlife score of 7.5 is above average for ultra-high performance summer tires, suggesting a longer lifespan than many competitors.

The lack of a treadwear warranty may deter buyers seeking guaranteed mileage from their performance tires.

Treadwear 320Traction AA
Spec score80estimated
Details

The ADVAN Sport V107 is a compelling option for drivers who prioritize dry and wet grip above all else.

  • Perfect dry grip score of 10, surpassing the category average of 8.7, making it a top choice for high-performance driving.
  • Wet grip rating of 9, well above the category average of 7.6, ensures reliable performance in rainy conditions.

The lower treadwear warranty of 20,000 miles may deter those seeking longer-lasting performance tires.

Treadwear 240Traction AA
Spec score78estimated
Details

The ContiSportContact 5P is a solid choice for drivers who value high performance in both dry and wet conditions.

  • Dry grip rating of 9, which is above the category average of 8.7, making it a strong performer for spirited driving.
  • Wet grip also scores a 9, significantly higher than the category average of 7.6, providing confidence in rainy conditions.

If you prioritize high-speed capability, the Michelin Pilot Sport 4S with its higher speed rating might be a better choice.

Treadwear 240Traction AA
Spec score78estimated
Details
Show 7 more ultra high performance summer options
Pirelli P Zero

Treadwear 220

77
76
Michelin Pilot Sport 4S

30,000 mi warranty · Treadwear 300

69
Hankook iON evo

Treadwear 320

66
Toyo Tire Proxes Sport A/S

40,000 mi warranty · Treadwear 550

63
Michelin Pilot Super Sport AC

30,000 mi warranty · Treadwear 300

63
2 models

Best Performance All-Season Tires in 275/30R21

All Performance All-Season tires

The Hankook Ventus S1 AS is a compelling choice for drivers who prioritize dry grip and handling above all else.

  • Perfect dry grip score of 10, surpassing the category average of 8.7, ideal for spirited driving on dry roads.
  • Handling score of 10 aligns with its dry grip, making it a strong performer for drivers who prioritize cornering and responsiveness.

Wet grip performance is below average for the category, making it less suitable for drivers in rainy climates.

50,000 mi warrantyTreadwear 560Traction A
Spec score73estimated
Details

The Nexen N5000 Platinum is a compelling option for drivers seeking a performance all-season tire with excellent dry grip and handling.

  • Outstanding dry grip with a perfect score of 10, surpassing the category average of 8.4.
  • Handling is rated at 10, making it a strong choice for drivers who prioritize responsive steering and control.

The lack of a 3PMSF rating means it's not the best choice for drivers who need reliable light snow performance.

55,000 mi warrantyTreadwear 550
Spec score69estimated
Details
2 models

Best Grand Touring All Season Tires in 275/30R21

All Grand Touring All Season tires

The Bridgestone Turanza 6 is a compelling choice for drivers who prioritize dry grip and handling in their grand touring all-season tires.

  • Comfort and noise scores both align with the category averages of 8, making it a balanced choice for quiet and smooth rides.
  • Dry grip and handling scores of 9.5 significantly exceed the category averages of 7.6, offering enhanced performance in dry conditions.

The low treadwear rating of 320 suggests a shorter lifespan, which may not suit drivers looking for maximum longevity.

Treadwear 320Traction A
Spec score66estimated
Details

The EcoContact 6Q is a solid choice for drivers who prioritize comfort and low noise levels during long highway drives.

  • Comfort and noise scores both hit 8, matching the category benchmarks, which is ideal for long-distance highway cruising.
  • Wet grip score of 7.5 slightly surpasses the category average of 7.4, indicating reliable performance in rainy conditions.

The lack of a treadwear warranty makes it a riskier choice for those seeking long-term durability assurances.

Treadwear 320Traction A
Spec score66estimated
Details
1 model

Best Winter Tires in 275/30R21

All Winter tires

The Dunlop SP Winter Sport 4D is best suited for drivers who face mostly cold and dry winter conditions, as its dry grip and handling scores are above the category average.

  • Dry grip score of 7.5 exceeds the winter category average of 7.1, making it a solid choice for cold, dry conditions.
  • Handling score of 7.5 suggests responsive steering and control, which is beneficial for winter driving dynamics.

The absence of 3PMSF certification makes it less suitable for severe winter conditions where certified tires are recommended.

Spec scoreestimated
Details
Fitment

Vehicles Using 275/30R21

+ 3 more vehicles use this size

Browse

Popular Brands in 275/30R21

Size decoded

What 275/30R21 Means

275/30R21 designates a tire 275 mm (10.8") wide with a sidewall 30% as tall as it is wide — about 83 mm (3.2") — mounted on a 21-inch wheel. That works out to an overall diameter of roughly 27.5", a circumference of about 86.4", and approximately 733 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

83 mm

Sidewall height

27.5"

Overall diameter

86.4"

Circumference

733

Revs per mile

Of the 16 275/30R21 tire models we track, the most common category is ultra high performance summer (11 models), followed by performance all-season (2) — a good indicator of the kind of vehicles and driving this size is designed for.

Before you buy

Frequently Asked Questions

What does 275/30R21 mean?
275/30R21 breaks down as follows: 275mm is the tire's section width (the widest point), 30 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 275/30R21 tires?
275/30R21 is a common fitment for vehicles like the 2021 Ferrari Monza, 2021 Polestar Polestar 1, 2018 Audi RS7, 2018 Audi S7 and others. Always confirm your specific trim's fitment before purchasing.
How tall is a 275/30R21 tire?
A 275/30R21 tire has a sidewall height of about 83 mm (3.2") and an overall diameter of roughly 27.5", turning approximately 733 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

275/30R21 Research Guides

Confirm 275/30R21 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.

Check my vehicle