Tire Size Guide

305/40R20 Tires

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

Our Top Pick in 305/40R20
Pirelli P Zero
Ultra High Performance SummerPerformance

The Pirelli P Zero is a strong choice for those who prioritize dry grip and handling precision above all else.

Dry grip and handling scores are both perfect 10s, setting a high bar for the ultra-high-performance summer category. Wet grip rating of 9 surpasses the category average of 7.6, making it reliable in summer rain. Treadwear warranty of 50,000 miles is above the category average, offering extended durability for a performance tire.
77Spec score (est.)
Full analysis
8 models

Best Ultra High Performance Summer Tires in 305/40R20

All Ultra High Performance Summer tires
Pirelli P ZeroPerformance

The Pirelli P Zero is a strong choice for those who prioritize dry grip and handling precision above all else.

  • Dry grip and handling scores are both perfect 10s, setting a high bar for the ultra-high-performance summer category.
  • Wet grip rating of 9 surpasses the category average of 7.6, making it reliable in summer rain.

If comfort and noise are significant factors, the P Zero's average scores in these areas may not meet your expectations.

Treadwear 220Traction AA
Spec score77estimated
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 score75estimated
Details

The Ventus S1 evo3 SUV is a solid choice for performance enthusiasts who value dry grip and handling above all else.

  • Outstanding dry grip and handling scores of 10, exceeding the category average of 8.7, make it a strong contender for spirited driving.
  • Treadwear warranty of 45,000 miles surpasses the category average of 37,754 miles, offering longer usability than many competitors.

Wet grip performance is below average for its category, which might be a concern for those frequently driving in rainy conditions.

Treadwear 420Traction A
Spec score75estimated
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.

60,000 mi warrantyTreadwear 280Traction AA
Spec score74estimated
Details
Show 4 more ultra high performance summer options
Michelin Pilot Sport A/S 3

45,000 mi warranty · Treadwear 500

69
Michelin Pilot Sport 4 SUV

20,000 mi warranty · Treadwear 220

57
Pirelli P Zero PZ4 Luxury

Specs on detail page

Hankook Ventus S1 evo Z AS X

Specs on detail page

5 models

Best Winter Tires in 305/40R20

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.

45,000 mi warrantyTreadwear 500Traction A
Spec score69estimated
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 warrantyTreadwear 500Traction A
Spec score66estimated
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.

Spec scoreestimated
Details
Show 1 more winter option
2 models

Best Grand Touring All Season Tires in 305/40R20

All Grand Touring All Season tires

The Yokohama AVID GT S35A is a solid choice for drivers who prioritize dry grip and handling in a grand touring all-season tire.

  • Comfort and noise scores of 8 match the grand touring all-season category averages, making for a quiet and comfortable ride.
  • Dry grip rating of 8.5 exceeds the category average of 7.6, providing better handling in dry conditions than many competitors.

Lack of a treadwear warranty and lower UTQG treadwear rating could lead to higher long-term costs for those expecting extended mileage.

Treadwear 440Traction A
Spec score73estimated
Details

The Bridgestone Alenza 001 is tailored for drivers who prioritize performance attributes like dry grip and handling in a grand touring all-season tire.

  • Dry grip score of 8.5, significantly above the category average of 7.6, making it a strong choice for spirited driving.
  • Comfort and noise scores both at 8, matching the category benchmarks, which means it won't annoy you on long drives.

The lack of a treadwear warranty and a low treadwear rating of 300 could lead to more frequent replacements, increasing long-term costs.

Treadwear 300Traction A
Spec score71estimated
Details
1 model

Best Highway All-Season Truck Tires in 305/40R20

All Highway All-Season Truck tires

The Pirelli Scorpion Verde A/S is a solid choice for highway drivers prioritizing dry grip and treadlife.

  • Treadlife score of 8.3 is above the category average, indicating a long-lasting tire for highway use.
  • Dry grip rating of 8.5 exceeds the category average of 7.7, making it a strong performer in dry conditions.

The absence of a treadwear warranty could be a concern for buyers focused on guaranteed longevity.

Treadwear 520Traction AA
Spec score80estimated
Details
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Popular Brands in 305/40R20

Size decoded

What 305/40R20 Means

305/40R20 designates a tire 305 mm (12.0") wide with a sidewall 40% as tall as it is wide — about 122 mm (4.8") — mounted on a 20-inch wheel. That works out to an overall diameter of roughly 29.6", a circumference of about 93.0", and approximately 681 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

122 mm

Sidewall height

29.6"

Overall diameter

93.0"

Circumference

681

Revs per mile

Of the 16 305/40R20 tire models we track, the most common category is ultra high performance summer (8 models), followed by winter (5) — a good indicator of the kind of vehicles and driving this size is designed for.

Before you buy

Frequently Asked Questions

What does 305/40R20 mean?
305/40R20 breaks down as follows: 305mm 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 20 is the wheel diameter in inches.
What vehicles use 305/40R20 tires?
305/40R20 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 305/40R20 tire?
A 305/40R20 tire has a sidewall height of about 122 mm (4.8") and an overall diameter of roughly 29.6", turning approximately 681 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

305/40R20 Research Guides

Confirm 305/40R20 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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