255/55r20 In Inches – Tire Size, Rim Fitment & Best Tires

The 255/55R20 tire presents a diameter of around 31 inches and a width of roughly 10 inches. Meant for a 20-inch rim, the high flotation version would be 31x10R20.

Ah, the world of tires! It’s a jungle out there, isn’t it? An unending assortment of codes, numbers, and measurements that might seem like they’re meant to confuse you more than anything else. Like 255/55r20, for example. What does that even mean? It’s a bit like a secret handshake, isn’t it? But hey, don’t worry. Today, we’re gonna break that code down for you and make you a part of the cool kids’ club. So, buckle up, because we’re about to embark on an exciting journey into the heart of tire dimensions. Let’s roll!

What does 255/55r20 Tire mean?

Grab a chair and sit tight as we pull back the curtain on the secret language of tires. Here’s a neat table that decodes the meaning of 255/55r20:

Tire numberIts Explanation
255This represents the width of the tire in millimeters. It’s the first number in the tire size. It’s also known as the tire’s “section width.”
55This number is the aspect ratio, a percentage that tells you how tall the tire’s sidewall is relative to its width. In this case, the sidewall height is 55% of the tire’s width.
RThe ‘R’ stands for Radial, which means the layers of fabric run radially across the tire. Most tires today are radial tires.
20This is the wheel diameter, measured in inches. It’s the size of the wheel that the tire is intended to fit.

There you go, secret handshake learned! Now, let’s dig a little deeper, shall we?

What is 255/55r20 Tire in inches?

255 55r20 In Inches

Since we’re all more or less accustomed to the imperial system, let’s translate the tire code from millimeters to inches. To do this, we have to remember a golden rule: 1 inch equals 25.4 millimeters. So, get your calculators ready (or just trust me on this one), and let’s dive in!

Tire Diameter31.1790
Section Width10.04255
Rim Height20508
Sidewall Height5.5140
Revolutions648/ mi403 /km

A Deeper Dive into the 255/55r20 Tire Specifications

Now that we’ve cracked the code of 255/55r20, let’s take a closer look at some of its fascinating specifications. Get ready to dive headfirst into the world of tire dimensions, where numbers become an adrenaline-fueled rollercoaster ride. Hold on tight!

Tire width of 255/55r20: A Sturdy Foundation

The width of a tire plays a crucial role in determining its stability and grip on the road. In the case of 255/55r20, we’re talking about a beefy width of 255 millimeters or approximately 10.04 inches. That’s right, we’re dealing with a substantial chunk of rubber here! With such a broad contact patch, your vehicle will have excellent traction, giving you the confidence to take on those twisting roads with a grin on your face.

Tire height of 255/55r20: Finding the Perfect Balance

Ah, tire height, the Goldilocks zone of the tire world. It shouldn’t be too tall, and it shouldn’t be too short. It needs to be just right! In the case of 255/55r20, the aspect ratio of 55% strikes that ideal balance. This means that the sidewall height of the tire is 55% of its width. So, for our 255-millimeter wide tire, the sidewall height measures around 5.5 inches. It’s like finding the perfect co-star for your favorite movie. Not too big, not too small, just the right fit!

Sidewall height of 255/55r20: A Protector in Disguise

While the sidewall may seem like the humble sidekick of a tire, it plays a vital role in absorbing shocks and protecting the wheel from damage. With a sidewall height of 5.5 inches on our 255/55r20 tire, you’ll have an extra layer of defense against potholes, road debris, and those unexpected encounters with the curb. It’s like having a trusty shield by your side, ready to take on anything the road throws your way.

Rim diameter for 255/55r20: Where Style Meets Performance

Now, let’s talk about the wheel that will house this magnificent tire. The 255/55r20 code reveals that it’s designed to fit a 20-inch wheel. Ah, the sweet spot of style and performance! A 20-inch wheel adds a touch of elegance to your ride while allowing ample space for larger brake calipers, enhancing your stopping power. It’s like putting on a dapper suit that not only looks good but also lets you strut your stuff with confidence.

Tire circumference of 255/55r20: Measuring the Full Circle

The circumference of a tire is like its heartbeat—it tells you how it measures up when it comes to rolling on the road. For our trusty 255/55r20 companion, the tire circumference comes in at around 97.7 inches. That means for every full rotation, your tire will cover almost 97.7 inches of ground. It’s like watching a marathon runner gracefully conquer mile after mile, leaving everyone in awe of its endurance and tenacity.

Popular Best 255/55r20 tires?

When it comes to finding the perfect set of tires for your vehicle, we know that you want nothing but the best. To save you from the overwhelming sea of options, we’ve handpicked the top contenders in the 255/55r20 category. These tires will not only meet your expectations but exceed them, delivering performance, comfort, and reliability. So, without further ado, let’s unveil our top 3 picks!

1. Hankook Dynapro HP2 All-Season Radial Tire – 255/55R20 107H

Description: The Hankook Dynapro HP2 is a true all-season performer that combines sporty handling with all-weather traction. With its innovative tread design, this tire offers exceptional grip on both wet and dry surfaces, ensuring a smooth and confident driving experience. The optimized tread pattern also minimizes road noise, providing a quiet and comfortable ride. Whether you’re navigating city streets or hitting the open highway, the Hankook Dynapro HP2 is designed to deliver top-notch performance.

Key Features:

  • All-season versatility for year-round driving
  • Enhanced traction and cornering stability
  • Reduced rolling resistance for improved fuel efficiency
  • Low road noise for a quiet ride
  • Durable construction for long-lasting performance


  • Excellent wet and dry traction
  • Comfortable and quiet ride
  • Impressive handling and stability
  • Long tread life


  • Limited performance in severe winter conditions
  • Slightly higher price point

Final Recommendation: If you’re looking for a reliable all-season tire that strikes a balance between performance and comfort, the Hankook Dynapro HP2 is an excellent choice. It offers superb handling, enhanced traction, and a quiet ride, making it ideal for daily driving and long journeys.

2. Nexen Roadian GTX All-Season Tire – 255/55R20 107H

Description: The Nexen Roadian GTX is a versatile all-season tire designed to deliver exceptional performance in various road conditions. Its advanced tread compound provides excellent grip and stability, ensuring confident handling on both dry and wet surfaces. The optimized tread pattern also enhances tread life and reduces road noise, resulting in a smooth and comfortable ride. Whether you’re cruising down the highway or tackling city streets, the Nexen Roadian GTX offers a perfect blend of performance and reliability.

Key Features:

  • All-season traction and handling
  • Enhanced stability and cornering performance
  • Long-lasting tread life
  • Reduced road noise for a quiet ride
  • Excellent value for money


  • Solid traction on dry and wet surfaces
  • Smooth and comfortable ride
  • Great durability and tread life
  • Affordable pricing


  • Average performance in extreme winter conditions
  • Slightly lower wet traction compared to some competitors

Final Recommendation: For those seeking a cost-effective all-season tire without compromising on performance, the Nexen Roadian GTX is an excellent option. With its impressive traction, stability, and longevity, it’s a tire that will keep you satisfied mile after mile.

3. Cooper Discoverer SRX All-Season 255/55R20XL 110H Tire

Description: The Cooper Discoverer SRX is a high-performance all-season tire designed to meet the demands of modern SUVs and crossovers. Its advanced silica compound provides exceptional grip and traction, ensuring excellent handling and stability on various road surfaces. The tire’s innovative tread pattern effectively evacuates water, reducing the risk of hydroplaning and enhancing wet weather performance. With its durable construction and long-lasting tread life, the Cooper Discoverer SRX is a tire that combines performance, safety, and reliability.

Key Features:

  • All-season performance and versatility
  • Enhanced traction and stability
  • Excellent wet weather performance
  • Durable construction for long tread life
  • Quiet and comfortable ride


  • Strong wet and dry traction
  • Impressive cornering stability
  • Great tread life
  • Minimal road noise


  • Not optimized for severe winter conditions
  • Slightly higher price compared to some competitors

Final Recommendation: If you’re looking for a high-performance tire that excels in wet weather conditions while providing a comfortable and quiet ride, the Cooper Discoverer SRX is a top choice. Its exceptional traction, stability, and durability make it a reliable companion for your daily adventures.

FAQ’s About 255/55r20 Tire

Ah, the curious minds of tire enthusiasts! You’ve got questions, and we’ve got answers. We’ve compiled a list of frequently asked questions about the mighty 255/55r20 tire to satisfy your thirst for knowledge. Let’s dive right in!

Q: What vehicles use 255/55r20 Tire?

A: The 255/55r20 tire size is a popular choice for a range of vehicles, especially SUVs and crossovers. You’ll find this tire size adorning the wheels of impressive machines like the BMW X5, Audi Q7, Porsche Cayenne, and many more. It’s the go-to size for those seeking a balance of performance, comfort, and style.

Q: How many revolutions per mile does a 255/55r20 have?

A: Ah, the mesmerizing dance of rotations! A 255/55r20 tire will make approximately 648 revolutions per mile. That’s right, with each mile traveled, this tire spins around like a graceful ballerina showing off its moves. So sit back, relax, and enjoy the tire’s rhythmic performance as it takes you on unforgettable journeys.

Q: Price of 255/55r20 inches Tire?

A: When it comes to the price of tires, it’s essential to consider various factors such as brand, tire type, and specific features. Prices can vary significantly, ranging from around $150 to $300 per tire or even more, depending on the brand and model. It’s always wise to compare prices and read reviews to find the best balance between quality and affordability.

Q: What kind of rim does a 255/55r20 tire fit on?

A: The 255/55r20 tire size is designed to fit on a 20-inch rim diameter. This means that if you have a vehicle with a 20-inch wheel, you’re in luck! Whether your rim is made of steel or alloy, as long as it has the correct diameter and appropriate offset for your vehicle, you’ll be able to rock the 255/55r20 tires with style and confidence.

Q: How much air should be in 255/55r20?

A: Ah, the ever-important topic of tire pressure! For the 255/55r20 tire, it’s crucial to maintain the recommended air pressure specified by the vehicle manufacturer. Typically, this information can be found on a placard inside the driver’s door jamb or in the vehicle’s owner’s manual. The recommended tire pressure usually falls within the range of 30-35 PSI (pounds per square inch). Remember, proper tire inflation not only ensures optimal performance but also contributes to your safety on the road.

Q: What is a 255/55r20 equivalent to?

A: Ah, the world of tire equivalency! If you’re wondering what other tire sizes are similar to the 255/55r20, you’re in for a treat. In terms of overall diameter, a tire size that closely matches the 255/55r20 is the 275/50r20. This means that if you’re unable to find the exact 255/55r20 size, you can consider the 275/50r20 as a suitable alternative. Just keep in mind that there may be slight variations in performance and handling characteristics.

Comparison with Similar Tires

When it comes to tire sizes, it’s always beneficial to explore your options and consider alternatives. To help you make an informed decision, we’ve prepared a series of comparisons between the popular 255/55r20 tire size and some similar alternatives. Buckle up and let’s dive into the exciting world of tire matchups!

255/55r20 vs 275/55r20: Size and Performance Clash!

The 255/55r20 and 275/55r20 tire sizes are close contenders in terms of overall diameter. The key difference lies in their width, with the 255/55r20 being 255mm wide and the 275/55r20 boasting a broader profile at 275mm. This extra width translates to enhanced traction and stability, especially during cornering. If you’re looking for a beefier appearance and a slight performance boost, the 275/55r20 might be the tire for you.

255/55r20 vs 265/50r20: Balancing Act Between Width and Aspect Ratio

In this matchup, we have the 255/55r20 squaring off against the 265/50r20. The 255/55r20 offers a wider contact patch, which can contribute to improved grip and handling. On the other hand, the 265/50r20 has a lower aspect ratio, meaning the sidewall height is lower in comparison. This can result in a sportier and more responsive driving experience. It’s a trade-off between width and a lower profile, so consider your priorities when making a choice.

255/55r20 vs 255/50r20: Aspect Ratio Battle!

Here we have a close encounter between the 255/55r20 and the 255/50r20 tire sizes. The key difference lies in the aspect ratio, with the 255/55r20 having a higher sidewall height. This means a slightly more comfortable and cushioned ride compared to the 255/50r20. On the other hand, the 255/50r20 has a lower profile, which can contribute to improved cornering stability and a sportier feel. It’s a matchup between comfort and performance, so choose according to your preferences.

255/55r20 vs 275/60r20: Width vs Height Showdown!

In this clash, the 255/55r20 squares off against the 275/60r20. The 275/60r20 tire offers a wider profile, which can provide enhanced stability and traction, especially on larger vehicles. On the other hand, the 255/55r20 has a slightly lower sidewall height, contributing to a more responsive and nimble feel. It’s a battle between width and height, so consider your vehicle’s characteristics and your driving preferences.

255/55r20 vs 255/45r20: Aspect Ratio Face-Off!

In this head-to-head matchup, we have the 255/55r20 facing the 255/45r20 tire size. The main difference lies in the aspect ratio, with the 255/45r20 having a lower sidewall height. This translates to a sportier and more precise handling experience, with improved responsiveness and cornering capabilities. However, the 255/55r20 offers a higher sidewall height, providing a more comfortable and cushioned ride. It’s a trade-off between performance and comfort, so choose based on your driving priorities.

255/55r20 vs 235/55r20: Narrow vs Wide Showdown!

In this battle of tire widths, the 255/55r20 takes on the 235/55r20. The 255/55r20 offers a wider contact patch, which can contribute to improved traction and stability, especially in challenging road conditions. On the other hand, the 235/55r20 has a narrower width, which can provide a smoother and quieter ride, especially on paved surfaces. It’s a matchup between width and a slightly narrower profile, so choose based on your driving needs and preferences.

255/55r20 vs 245/50r20: Width and Aspect Ratio Dance-Off!

Here we have a face-off between the 255/55r20 and the 245/50r20 tire sizes. The 255/55r20 boasts a wider width, which can provide enhanced traction and stability, especially during cornering maneuvers. The 245/50r20, on the other hand, has a lower aspect ratio, resulting in a lower sidewall height and a sportier driving experience. It’s a dance between width and aspect ratio, so choose according to your desired balance between performance and comfort.

255/55r20 vs 255/60r20: Aspect Ratio and Height Battle!

In this clash, the 255/55r20 takes on the 255/60r20 tire size. The 255/55r20 offers a lower aspect ratio, meaning a lower sidewall height, resulting in improved handling and responsiveness. The 255/60r20, on the other hand, has a higher sidewall height, which can provide a more comfortable and cushioned ride. It’s a matchup between aspect ratio and sidewall height, so consider your driving preferences and comfort needs.

255/55r20 vs 275/50r20: Width and Performance Showdown!

The 255/55r20 and 275/50r20 tire sizes face off in this battle of width and performance. The 255/55r20 offers a slightly narrower width, while the 275/50r20 boasts a wider profile. The wider tire can provide enhanced traction and stability, especially during high-speed maneuvers. If you’re seeking a tire with a more aggressive appearance and improved performance, the 275/50r20 might be the way to go.

255/55r20 vs 265/55r20: Width and Performance Struggle!

In this match, the 255/55r20 takes on the 265/55r20 tire size. The key difference lies in the width, with the 265/55r20 having a slightly wider profile. This can contribute to enhanced stability and traction, especially during cornering and acceleration. The 255/55r20, with its slightly narrower width, can offer a balance between performance and fuel efficiency. Consider your priorities when it comes to width and performance characteristics.


In conclusion, the 255/55r20 tire size offers a balanced combination of performance, comfort, and style for SUVs and crossovers. With its wide contact patch and optimal sidewall height, it provides excellent traction and stability on various road conditions. We have explored its meaning, dimensions in inches, best tire options, frequently asked questions, and comparisons with similar sizes.

Based on the information provided, our top recommendation for the best 255/55r20 tire is the Hankook Dynapro HP2 All-Season Radial Tire. It offers impressive all-season performance, excellent traction, and a comfortable ride.

However, it’s essential to consider your specific needs and preferences when selecting tires for your vehicle. Take into account factors like driving conditions, tread life, and budget to make an informed decision.

Remember, tires are the vital link between your vehicle and the road, so choose wisely to ensure safety, performance, and an enjoyable driving experience.