275/55R20 in Inches: Size, Specs, Price & Tire Guide

The 275/55R20 tire measures 31.9 inches (810 mm) in overall diameter, 10.8 inches (275 mm) in width, and fits a 20-inch (508 mm) wheel. Its sidewall height is 5.9 inches (150 mm), with a circumference of about 100.2 inches (2546 mm), giving around 632 revolutions per mile (393 per kilometer).

This tire size balances comfort and durability, making it suitable for both highway driving and light off-road use. In this article, we’ll break down their key features, benefits, vehicle compatibility, and everything you need to know before making a purchase.

You can also explore my other posts on various tire sizes for more guidance before making a decision.

Metric vs. Inch-Based Tire Measurements

Tire sizes are usually given in metric measurements, but many drivers find it easier to work with inches. For example, 275/55R20 in inches gives us clear dimensions like 10.8-inch width and 31.9-inch total diameter. This makes it easier to compare with other tires and understand how the size impacts your vehicle’s handling, comfort, and fuel efficiency.

275/55R20 in Inches & Metric: Full Tire Dimensions

To make things simple, here’s a full breakdown of the 275/55R20 tire dimensions in both inches and millimeters:

Why These Measurements Matter?

Understanding 275/55R20 dimensions helps you:
✔ Ensure proper fitment for your vehicle.
✔ Choose the right tire type for your driving needs.
✔ Compare with other tire sizes to see if there’s a better alternative.

For example, a wider tire provides better stability and grip, while a taller tire can improve ride comfort but may slightly affect fuel efficiency. By knowing the exact dimensions in inches, you can make an informed decision when buying new tires.

What Do the Numbers in 275/55R20 Mean?

Tire sizes might look complicated, but they follow a simple pattern. Let’s break down 275/55R20 step by step:

• 275: This is the tire width in millimeters. It means the tire is 275 mm wide, which converts to 10.8 inches. A wider tire provides better stability and road grip, especially on wet or uneven surfaces.
• 55: This is the aspect ratio, which tells us that the sidewall height is 55% of the tire’s width. In this case, it’s about 5.9 inches. A lower aspect ratio means a sportier look and better handling, but it may provide a firmer ride.
• R: This stands for Radial construction, which is the most common type of tire construction today. Radial tires are known for their durability, flexibility, and better traction on the road.
• 20: This indicates the tire is designed to fit a 20-inch wheel. The wheel size is crucial when choosing tires because it must match your rims exactly.

How to Convert 275/55R20 to Inches: A Simple Guide

If you’re looking for 275/55R20 tire dimensions in inches, you’re in the right place! Many people find metric tire sizes confusing, so converting them into inches makes it easier to compare sizes and understand how they’ll fit on your vehicle.

Let’s break it down step by step:

✔ Tire Width: The 275 mm width can be converted to inches by dividing it by 25.4 (since there are 25.4 mm in an inch). This gives us 10.8 inches of width.
✔ Sidewall Height: The second number in the tire size, 55, is the aspect ratio, meaning the sidewall height is 55% of the tire’s width. So, 10.8 inches × 0.55 = 5.9 inches.
✔ Total Tire Diameter: To get the full tire height:

• Multiply the sidewall height (5.9 inches) by 2 (since there’s a sidewall on both top and bottom).
• Add the wheel diameter (20 inches).
• 5.9 × 2 + 20 = 31.9 inches total diameter.

Why Is This Important?

Knowing these measurements helps when:
✔ Comparing tire sizes before buying.
✔ Avoiding fitment issues with your vehicle.
✔ Understanding performance changes (wider tires = better grip, taller tires = smoother ride).

Now that you have the full breakdown, let’s talk about price and budget options for 275/55R20 tires.

275/55R20 in Inches Price: What to Expect?

One of the most common questions when shopping for 275/55R20 tires is, “How much do they cost?” The price can vary based on brand, tire type, and performance features, but in general, you can expect to pay between $130 and $300 per tire.

Factors That Affect the Price of 275/55R20 Tires

1. Brand Reputation
   • Premium brands like Michelin, Goodyear, and BFGoodrich charge more due to their advanced technology, longer lifespan, and better warranties.
   • Budget brands offer lower prices, but they might not provide the same level of durability and performance.
2. Tire Type (All-Season vs. All-Terrain)
   • All-season tires are generally cheaper and work well on paved roads in most weather conditions.
   • All-terrain tires cost more because they offer stronger tread, better traction, and durability for rough terrains.
3. Performance Features
   • Tread durability: Higher-end tires have reinforced tread to last longer.
   • Grip & Handling: Some models come with improved wet/dry traction for safety.
   • Noise Reduction: Premium tires have quieter tread patterns for a smoother ride.
4. Budget vs. Premium Tires – What’s Worth Paying Extra For?
   • If you do a lot of highway driving, a budget-friendly all-season tire is a good choice.
   • If you go off-road or drive in extreme weather, spending extra on a high-quality all-terrain tire is a smart investment.

275/55R20 in Inches All-Terrain Tires: Off-Roading Made Easy

If you drive on dirt roads, rocky paths, or wet trails, regular all-season tires won’t cut it. That’s where all-terrain (A/T) tires come in. These tires are built to handle tough road conditions while still offering a comfortable ride on highways.

Why Choose All-Terrain Tires?

• Better Grip on Rough Terrain: The deeper tread helps with mud, gravel, and sand traction.
• Stronger Sidewalls: Designed to resist punctures and damage from sharp rocks.
  
• Versatility: Works for both highway and off-road driving.

Best 275/55R20 All-Terrain Tires for Durability & Performance

If you’re looking for the best A/T tires in this size, here are some top picks:

• BFGoodrich All-Terrain T/A KO2 – Tough sidewalls, excellent off-road grip, and long lifespan.
• Goodyear Wrangler All-Terrain Adventure – A great mix of highway comfort and off-road durability.
• Falken Wildpeak A/T3W – Outstanding wet traction and winter performance.
• Toyo Open Country A/T III – Deep tread for mud, snow, and rough roads.

Tread Design & Grip – How They Handle Different Conditions

• Mud: Wide tread gaps help push out mud, preventing tires from getting stuck.
• Sand: Lowering tire pressure slightly improves traction on soft surfaces like dunes.
• Gravel & Rocks: Reinforced rubber and stone ejectors keep small rocks from getting trapped.

All-Terrain vs. All-Season Tires – What’s the Difference?

Vehicle Compatibility: Which Trucks & SUVs Use 275/55R20 Tires?

If you’re wondering whether 275/55R20 tires will fit your vehicle, you’re not alone! This size is a popular choice for trucks and SUVs, thanks to its perfect blend of stability, traction, and performance. Many manufacturers equip their vehicles with this size from the factory, while others allow for an easy upgrade.

Trucks & SUVs That Commonly Use 275/55R20 Tires

Here are some well-known vehicles that come standard or can be fitted with 275/55R20 tires:

• Ford F-150 (2009–2014) – A best-selling truck known for towing power and durability.
• Chevrolet Silverado 1500 (2007–2018) – A reliable workhorse with great handling.
• GMC Sierra (2007–2014) – Offers a smooth ride with impressive payload capacity.
• Toyota Tundra (2007–2013) – A tough truck built for both highways and off-road terrains.

These vehicles are designed to handle larger wheels and tires, making 275/55R20 a great choice for improved performance and aesthetics.

How to Check If Your Vehicle Can Use 275/55R20 Tires?

Not sure if this size fits your truck or SUV? Here’s how to check:

• Look at Your Current Tire Size – It’s printed on the sidewall of your existing tires. If it includes 275/55R20, you’re good to go!
• Check Your Vehicle’s Manual – The manufacturer provides recommended tire sizes and wheel compatibility.
• Ask a Tire Shop or Mechanic – If you’re unsure, professionals can measure clearance and check for fitment issues.
• Consider Wheel Well Space – If your truck or SUV currently has smaller tires, switching to 275/55R20 may require checking for rub clearance to avoid rubbing against the fenders.

Upgrading to 275/55R20 tires can enhance your vehicle’s handling and road grip, but always verify fitment to avoid issues with suspension and speedometer readings. For detailed information, explore our dedicated section on tire repair services.

FAQs 

Q. What is the circumference of a 275/55R20 tire?

The circumference is about 100.2 inches, meaning the tire travels this distance in one full rotation.

Q. How many revolutions per mile does a 275/55R20 tire make?

It completes approximately 632 revolutions per mile, affecting speedometer accuracy if you switch sizes.

Q. Are 275/55R20 tires good for off-road driving?

Yes, especially if you choose all-terrain models, which offer better traction on dirt, mud, and gravel.