Tire Scouter

305/35R21 tires

Compare 5 models made in this size across 2 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 305/35R21

Michelin Pilot Alpin 5 SUV

  • Winter
  • Severe-snow rated

Best for sUV owners in snowy regions.

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.
  • Handling and dry grip both score 7.5, above the category average for dry grip, making it versatile for varied winter conditions.
Full analysis

The highest spec score among winter tires in this size that we have analysis for, the most common category for 305/35R21.

54Fair
30k mi
Not graded
Not graded
V · 149 mph

Every scale below runs from the lowest to the highest spec score among the 1 scored tires in 305/35R21 (54 to 54).

Best winter tires in 305/35R21

3 models, highest spec score first.

All winter tires

  1. Michelin Pilot Alpin 5 SUV

    Severe-snow rated

    Best for SUV owners in snowy regions.

    54FairFrom 2 of 5 specs
    Warranty
    30k mi
    Treadwear
    Not graded
    Traction
    Not graded
    Speed rating
    V · 149 mph
    • 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.

  2. Pirelli Winter Sottozero 3

    Severe-snow rated

    Best for high-mileage winter drivers.

    Not enough spec data
    Warranty
    None listed
    Treadwear
    Not graded
    Traction
    Not graded
    Speed rating
    Y · 186 mph
    • 50,000-mile treadwear warranty is notable for a winter tire, offering longevity that many competitors don't match.
    • Dry grip score of 8.5 exceeds the winter category average of 7.1, making it a strong performer on clear roads.
    • Lack of ice traction data may be a concern for drivers who frequently encounter icy roads.

  3. Pirelli Scorpion Winter

    Severe-snow rated

    Best for winter highway commuters.

    Not enough spec data
    Warranty
    None listed
    Treadwear
    Not graded
    Traction
    Not graded
    Speed rating
    V · 149 mph
    • 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.

Best ultra high performance summer tires in 305/35R21

2 models, highest spec score first.

All ultra high performance summer tires

  1. Pirelli P Zero PZ4 Luxury

    Best for dry condition enthusiasts.

    Not enough spec data
    Warranty
    None listed
    Treadwear
    Not graded
    Traction
    Not graded
    Speed rating
    Y · 186 mph
    • Dry grip score of 9 exceeds the category average of 8.7, making it a strong performer in dry conditions.
    • Handling score of 9 keeps it competitive for responsive driving, aligning with its ultra-high-performance designation.
    • Its wet grip performance lags behind the category average, which could be a dealbreaker for those frequently driving in wet conditions.

  2. Pirelli P Zero PZ4 Luxury NCS

    Best for dry road enthusiasts.

    Not enough spec data
    Warranty
    None listed
    Treadwear
    Not graded
    Traction
    Not graded
    Speed rating
    Y · 186 mph
    • Perfect dry grip score of 10, surpassing the category average of 8.7 — ideal for spirited driving on dry roads.
    • Handling score of 10, offering precise and responsive control, which is critical for high-performance driving.
    • The wet grip score of 5 is a major drawback for those who frequently drive in rainy conditions.

Popular brands in 305/35R21

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

What 305/35R21 means

305/35R21 designates a tire 305 mm (12.0") wide with a sidewall 35% as tall as it is wide — about 107 mm (4.2") — mounted on a 21-inch wheel. That works out to an overall diameter of roughly 29.4", a circumference of about 92.4", and approximately 686 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

Of the 5 305/35R21 tire models we track, the most common category is winter (3 models), followed by ultra high performance summer (2) — a good indicator of the kind of vehicles and driving this size is designed for.

Sidewall height
107 mm
Overall diameter
29.4 in
Circumference
92.4 in
Revs per mile
686

Frequently asked questions

What does 305/35R21 mean?

305/35R21 breaks down as follows: 305mm is the tire's section width (the widest point), 35 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 305/35R21 tires?

305/35R21 is a standard tire size found on many trucks, SUVs, and crossovers. Use our vehicle search to confirm your exact fitment.

How tall is a 305/35R21 tire?

A 305/35R21 tire has a sidewall height of about 107 mm (4.2") and an overall diameter of roughly 29.4", turning approximately 686 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

305/35R21 research guides

Best winter tires 2026

Cold-weather picks for snow, ice, slush, and sub-freezing temperatures across cars, SUVs, and trucks.

Read the guide

3PMSF vs M+S snow ratings

What the mountain snowflake and M+S marks certify, and which one the winter tire laws ask for.

Read the guide

When to replace tires

Know the real tread-depth, age, and wear-pattern signs that mean your tires are ready to be replaced.

Read the guide

Confirm 305/35R21 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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