Tire Scouter

245/40R21 tires

Compare 14 models made in this size across 3 categories, ranked by spec score, then confirm fitment for your vehicle.

Spec scores are estimates from five manufacturer specs, not road tests. How we score

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Our top pick in 245/40R21

Pirelli P Zero Run Flat (PZ4)

  • Ultra high performance summer

Best for wet-weather enthusiasts.

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.
  • Handling score of 8 aligns well with the category's performance expectations, providing a responsive driving experience.
Full analysis

The highest spec score among ultra high performance summer tires in this size that we have analysis for, the most common category for 245/40R21.

80Strong
None listed
320
AA
Y · 186 mph

Every scale below runs from the lowest to the highest spec score among the 14 scored tires in 245/40R21 (62 to 80).

Best ultra high performance summer tires in 245/40R21

10 models, highest spec score first.

All ultra high performance summer tires

  1. Pirelli P Zero Run Flat (PZ4)

    Best for wet-weather enthusiasts.

    80StrongFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    320
    Traction
    AA
    Speed rating
    Y · 186 mph
    • 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.

  2. Pirelli P Zero (PZ4)

    Best for drivers in wet climates.

    79StrongFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    280
    Traction
    AA
    Speed rating
    Y · 186 mph
    • 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.

  3. Continental SportContact 7

    Best for wet-weather performance seekers.

    78StrongFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    240
    Traction
    AA
    Speed rating
    Y · 186 mph
    • 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, providing a balanced performance for spirited driving.
    • Lack of a treadwear warranty and lower dry grip rating compared to competitors may deter track-focused buyers.

  4. Goodyear Eagle F1 Asymmetric 6

    Best for performance enthusiasts.

    78StrongFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    260
    Traction
    AA
    Speed rating
    Y · 186 mph
    • Perfect dry grip and handling scores of 10, outperforming the category average of 8.7 — ideal for spirited driving.
    • Wet grip rating of 9 surpasses the category average of 7.6, providing strong performance in rainy conditions.
    • Average comfort and noise levels may deter those looking for a quieter, more refined ride in an ultra-high-performance tire.
Show 6 more ultra high performance summer tires

  1. Dunlop SP Sport Maxx 050 DSST CTT

    Best for enthusiast drivers.

    71GoodFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    280
    Traction
    A
    Speed rating
    Y · 186 mph

  2. Bridgestone Potenza S001L RFT

    Best for enthusiast drivers.

    71GoodFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    280
    Traction
    A
    Speed rating
    Y · 186 mph

  3. Michelin Pilot Super Sport ZP

    Best for wet-weather enthusiasts.

    69Good
    Warranty
    30k mi
    Treadwear
    300
    Traction
    AA
    Speed rating
    Y · 186 mph

  4. Michelin Pilot Sport 4S

    Best for enthusiast drivers.

    69Good
    Warranty
    30k mi
    Treadwear
    300
    Traction
    AA
    Speed rating
    Y · 186 mph

  5. Michelin Pilot Sport S 5

    Best for wet-weather enthusiasts.

    63Good
    Warranty
    30k mi
    Treadwear
    300
    Traction
    A
    Speed rating
    Y · 186 mph

  6. Dunlop SP Sport Maxx 060

    Best for dry-weather enthusiasts.

    62GoodFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    280
    Traction
    B
    Speed rating
    Y · 186 mph

Best grand touring all-season tires in 245/40R21

3 models, highest spec score first.

All grand touring all-season tires

  1. Michelin Primacy Tour A/S

    Best for commuters seeking dry road performance.

    72Strong
    Warranty
    55k mi
    Treadwear
    540
    Traction
    A
    Speed rating
    V · 149 mph
    • 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.

  2. Hankook iON evo

    Best for enthusiast drivers.

    72StrongFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    320
    Traction
    A
    Speed rating
    Y · 186 mph
    • Perfect dry grip and handling scores of 10, exceeding the category average of 8.7, make it a strong choice for spirited driving.
    • Treadlife score of 7.5 is above the category average, suggesting longer wear than many ultra-high-performance peers.
    • Wet grip performance lags behind some competitors, which could be a dealbreaker for drivers in consistently wet climates.

  3. Bridgestone Alenza 001 RFT

    Best for comfort-focused drivers.

    71GoodFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    300
    Traction
    A
    Speed rating
    Y · 186 mph
    • Comfort and noise scores of 8 match the category benchmarks, making it a quiet and smooth option 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 and a low treadwear rating of 300 suggest a shorter lifespan, which may not suit budget-conscious drivers.

Best all-terrain tires in 245/40R21

1 model, highest spec score first.

All all-terrain tires

  1. Pirelli Scorpion Zero All Season

    Best for long-distance drivers.

    75StrongFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    500
    Traction
    A
    Speed rating
    V · 149 mph
    • 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.

Vehicles that use 245/40R21

A sample of recent vehicles whose factory front size is 245/40R21. Sizes can vary by trim, so confirm yours before you buy.

  • 2025 BMW X4 xDrive
  • 2025 Genesis G90
  • 2025 Karma Revero
  • 2025 Lexus LC500
  • 2025 Lexus LC500h
  • 2025 Volvo V90 Cross Country
  • 2025 Volvo XC40
  • 2024 BMW X3
  • 2024 BMW X3 M
  • 2024 BMW X3 xDrive
  • 2024 BMW X4 xDrive
  • 2024 Genesis G90

Showing 12 of the most recent.

Popular brands in 245/40R21

The number beside each brand is how many of its models come in this size.

What 245/40R21 means

245/40R21 designates a tire 245 mm (9.6") wide with a sidewall 40% as tall as it is wide — about 98 mm (3.9") — mounted on a 21-inch wheel. That works out to an overall diameter of roughly 28.7", a circumference of about 90.2", and approximately 702 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

Of the 14 245/40R21 tire models we track, the most common category is ultra high performance summer (10 models), followed by grand touring all-season (3) — a good indicator of the kind of vehicles and driving this size is designed for.

Sidewall height
98 mm
Overall diameter
28.7 in
Circumference
90.2 in
Revs per mile
702

Frequently asked questions

What does 245/40R21 mean?

245/40R21 breaks down as follows: 245mm 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 245/40R21 tires?

245/40R21 is a common fitment for vehicles like the 2025 BMW X4 xDrive, 2025 Genesis G90, 2025 Karma Revero, 2025 Lexus LC500 and others. Always confirm your specific trim's fitment before purchasing.

How tall is a 245/40R21 tire?

A 245/40R21 tire has a sidewall height of about 98 mm (3.9") and an overall diameter of roughly 28.7", turning approximately 702 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

245/40R21 research guides

Summer vs all-season tires

Where summer tires lose grip, the cold-cracking risk, and what all-season tires trade for their range.

Read the guide

Speed rating chart

A practical chart for common tire speed ratings and what they mean for everyday driving.

Read the guide

Changing tire size

Plus-sizing and alternate sizes: diameter limits, load and speed ratings, and speedometer error.

Read the guide

Confirm 245/40R21 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.

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