When it comes time to buy new tires, the options can be overwhelming. Do you go with a smaller size for better handling or a larger size for comfort? What about the type of tire? Should you get all-season tires, winter tires, or something else entirely? And finally, what brand should you choose?
It’s no secret that choosing the right set of tires is essential for both safety and performance. We will compare the 285 55r20 and 305 55r20 tire sizes to help you make the best decision for your needs.
285 55r20 | 305 55r20 |
Diameter 32. | Diameter 33.21 inches |
Width 11.22 inches | Width 12.01 inche |
Sidewall Height 6.17 inches | Sidewall Height 6.6 inches |
Radial Tire (A Radial-Ply Tire) | Radial Tire (A Radial-Ply Tire) |
|
Rim Size 20 inches | Rim Size 20 inches |
Circumference 101. | Circumference 104.33 inches |
Revs Per Mile 623 | Revs Per Mile 607 |
Aspect Ratio 55% Of Its Width | Aspect Ratio 55% Of Its Width |
The 285 55r20 tire size means that the tire has a width of 285 millimeters, a sidewall height of (55% of 285) 157.75 millimeters, and is designed to fit a wheel with a 20-inch diameter. T letter R indicates that the tire is a Radial type. This particular size is commonly used on SUVs and trucks.
Tire Width
The width of the 285 55r20 tire is 285 millimeters.
The width of the 305 55r20 tire is 305 millimeters. That means that the 305-millimeter tire is 20 millimeters wider than the 285-millimeter tire. Wider tires typically offer better traction and stability. Still, they can also be more challenging to handle, especially at high speeds.
Aspect Ratio
The aspect ratio of a tire is the sidewall height as a percentage of the width. The sidewall height is also known as the “profile.” In this case, we’re looking at the 55-series tires. That means that the sidewall height of both tires is 55% of their respective widths.
The 285 55r20 tire has a sidewall height of 156.75 millimeters. The 305 55r20 tire has a sidewall height of 167.75 millimeters. That means that the 305-millimeter tire is taller by just about ten millimeters. Taller tires can offer a smoother ride, but they may also decrease fuel efficiency and increase braking distances.
Construction Type
Both the 285 55r20 and 305 55r20 tires are radial.
Radial tires are designed with steel belts that run across the tread in a radial direction (from the center of the tire to the edge). This design offers several advantages, including better fuel efficiency, longer tread life, and increased stability.
Rim Size
The final aspect of tire size that we’ll be looking at is the rim size. The 285 55r20 and 305 55r20 tires are designed to fit a 20-inch diameter wheel. That’s the most common size for SUVs and trucks.
Circumference
The circumference of a tire is the distance around the outside of the tire. It’s important to know the circumference of your tires because it can affect speedometers, odometers, and fuel economy.
The circumference of the 285 55r20 tire is about 101.61 inches. The circumference of the 305 55r20 tire is about 104.33 inches. That means that the 305-millimeter tire is about three and a half inches longer than the 285-millimeter tire.
Revolutions Per Mile
The number of revolutions per mile (RPM) is a measure of how often the tire turns as it goes one mile.
The higher the number, the more times the tire will turn in a mile. The RPM of the 285 55r20 tire is about 623. The RPM of the 305 55r20 tire is about 607. That means that the 305-millimeter tire will turn about 16 times fewer in a mile than the 285-millimeter tire.
Generally speaking, smaller tires have higher RPMs, and larger tires have lower RPMs. That’s because it takes more effort to turn a larger tire than a smaller one.
Our Observation
The main difference between 285 55r20 and 305 55r20 Tire is their width. The 285 55r20 is 20 mm narrower than the 305 55r20. Other than that, they have almost similar features. So, it depends on your vehicle and driving habits which one you should choose. If you frequently drive in off-road conditions or deep snow, a wider tire will offer better traction. report this ad
If you do most of your driving on paved roads, a narrower tire may provide better fuel efficiency and handling. It’s essential to consult your owner’s manual or a qualified tire professional before making any changes to your tires.
The wrong size tire can adversely affect the performance of your vehicle.
Conclusion
Now that we’ve looked at the differences between the 285 55r20 and 305 55r20 tires, it’s time to decide which one is right for you. If you’re looking for better traction and stability, the 305-millimeter tire is the way to go. If you’re looking for better fuel efficiency and handling, the 285-millimeter tire is a good choice.
As always, it’s essential to consult your owner’s manual or a qualified tire professional before making any changes to your tires. The wrong size tire can adversely affect the performance of your vehicle. Thanks for reading! We hope this article has helped you make a decision about which tire size is right for you.
Related Article
There are many different tire sizes available. Each tire size has its pros and cons, and you must understand which one will suit the requirements of your car before buying a new set of tires.
Tire size is measured in several ways, and it’s not always easy to precisely understand which one you require.
The following article will explain everything you need to know about 285 55r20 vs 285 60r20 Tire Size, as well as give some examples of standard tire sizes so that you can determine which suits your needs best.
285 60r20 | 285 55r20 |
Overall Diameter 33. | Overall Diameter 32.34 inches |
Width 11.22 inches | Width 11.22 inche |
Sidewall Height 6.73 inches | Sidewall Height 6.17 inches |
Radial Tire (A Radial-Ply Tire) | Radial Tire (A Radial-Ply Tire) |
Rim Size 18 inches | Rim Size 18 inches |
Circumference 105. | Circumference 101.61 inches |
Revs Per Mile 602 | Revs Per Mile 623 |
The first number in a 285 60r20 tire size is the width of the tire in millimeters. In this case, the width of the tire is 285 mm. The second number is the aspect ratio. This is the height of the sidewall as a percentage of the width.
In this case, the sidewall height is 60% of the width, or 171 mm. The third number is the wheel diameter in inches. In this case, the wheel diameter is 20 inches. The letter “R” indicates the tire construction type of the tire.
Tire Diameter
How tall your tire is will affect a lot of things. The most important is the fitment of your car, or how well the tire will fit in the wheel well.
A taller tire will have a larger diameter and be more comprehensive than a shorter one.
A wider tire will have a better grip on the road and will offer more stability. In comparison, a narrower tire will be lighter and will offer less rolling resistance. The height of the 285 60r20 tire size is 33.46 inches, while the height of the 285 55r20 tire size is 32.34 inches. The difference between those is 1.12 inches or 3.5%.
Section Width
The section width of a tire is the width from one sidewall to the other. The width of the 285 60r20 tire size is 11.22 inches, while the width of the 285 55r20 tire size is 11.22 inches. The difference between those tires is 0.
As you can see, there is no significant difference in width between these two sizes. However, the 285 60r20 tire size is slightly wider, offering better stability and grip.
Circumference
The circumference of a tire is the distance around the outside of the tire. The circumference of the 285 60r20 tire size is 105.
13 inches, while the circumference of the 285 55r20 tire size is 101.61 inches. The difference between those is about 3.53 inches or 3.5%.
While the difference in circumference may not seem like much, it can significantly affect how your car handles. A smaller circumference tire will have a shorter contact patch with the ground, which can lead to less grip.
Revolutions Per Mile
The number of revolutions per mile (RPM) is the number of times the tire will go around in one mile. The RPM of the 285 60r20 tire size is 602, while the RPM of the 285 55r20 tire size is 623. The difference between those is about 21 RPM or 3.4%.
The RPM of a tire can affect fuel economy and how your car drives. A higher RPM tire will have a shorter contact patch with the ground, which can lead to less grip.
Sidewall Height
The sidewall height of the 285 60r20 tire size is 6.73 inches, while the sidewall height of the 285 55r20 tire size is 6.17 inches.
The difference between those is about 0.56 inches or 9.1%.
A tire’s sidewall height can affect how your car handles it. A taller sidewall will offer more cushioning and a smoother ride. In comparison, a shorter sidewall will offer less cushioning and a firmer ride.
Wheel Size
The wheel size of the 285 60r20 tire size is 20 inches, while the wheel size of the 285 55r20 tire size is 20 inches. The difference between those is 0 inches. As you can see, the wheel size is the same for both tire sizes.
Construction Type
The 285 60r20 tire size construction type is “R,” which refers to the radial tire. At the same time, the construction type of the 285 55r20 tire size is also “R,” which indicates the radial tire too. Both are radial tires. Radial tires are the most common type of tire and are used on most passenger cars, SUVs, and light trucks.
Our Observation
The sidewall height is the main difference between the 285 55r20 and 285 60r20 tire sizes.
The 285 60r20 tire size is 0.56 inches or 9.1% taller than the 285 55r20 tire size.report this ad
The taller sidewall of the 285 60r20 tire size will offer more cushioning and a smoother ride. But it may also lead to less grip and stability. It depends on your driving needs and preferences.
Conclusion
If you need a tire that offers more cushioning and a smoother ride, go for the 285 60r20 tire size. But if you need a tire that can provide more grip and stability, go for the 285 55r20 tire size.
We hope this blog post helps you decide which tire size is better for you! Thanks for reading! Please feel free to comment below if you have any questions or need more help! We’re always happy to assist. 🙂
Related Article
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In the table above you can see a detailed comparison of the difference in dimensions, parameters and performance between a 285/55 R20 tire and a 275/55 R20 tire. The results of the calculations are also presented in the form of visual models (infographics), on which the tire with a size of 285/55 R20 is on top, and with a size of 275/55 R20, respectively, at the bottom. The visualization was generated in two projections: lateral (left) and frontal (right). The online calculator compares tires according to the following characteristics: diameter, width, circumference, profile height, revolutions per km, ground clearance change. Additionally, a potential deviation between the actual speed and the speed displayed on the speedometer is calculated, which can occur if the difference between tires 285/55 R20 and 275/55 R20 is significant. US and UK inch version of calculations. nine0009
If you want to compare other tyres, just select the required parameters in the drop-down fields and click on the green button.
| Side Comparison | Frontal comparison |
|---|---|
| R12 | R13 | R14 | R15 | R16 | R17 | R18 | R19 |
|---|---|---|---|---|---|---|---|
| 5 R12 135/80 R12 145/80 R12 155 R12 155/70 R12 | 135/80 R13 145/70 R13 145/80 R13 155/65 R13 155/70 R13 155/80 R13 165 R13 /65 R13 165/70 R13 9005 175 R13 900 RAM /65 R13 175/70 R13 185/60 R13 185/70 R13 185/75 R13 | 155/65 R14 155/70 R14 165/60 R14 165/65 R14 165/70 R14 175 R14 175/60 R14 175/65 R14 175/70 R14 9005 9005 9005 9005 900 175/80 R14 185 R14 185/55 R14 185/60 R14 185/65 R14 185/70 R14 185/75 R14 185/80 R14 R14 195/60 R14 9005 195/70 R14 195/75 R14 205 R14 205/70 R14 215/75 R14 | 28/8. 5 R15 30/9.5 R15 30/10 R15 31/10.5 R15 31/11.5 R15 32/11.5 R15 32/12.5 R15 33/10.5 R15 33/12.5 R15 35/12.5 R15 38/12.5 R15 /15.5 R15 135/70 R15 9005 14 14/65 R15 155/60 R15 165/60 R15 165/65 R15 175/50 R15 175/55 R15 175/60 R15 175/65 R15 185 R15 9005/55 R15 185/60 R15 9005 19005 19005 19005 18 18. /65 R15 195 R15 195/50 R15 195/55 R15 195/60 R15 195/65 R15 /70 R15 195/75 R15 195/80 R15 205/50 R15 205/55 R15 205/60 R15 205/65 R15 205/70 R15 205/75 R15 215/65 R15 /70 R15 215/75 R15 215/80 R15 215/90 RAL 225/60 R15 225/70 R15 225/75 R15 225/80 R15 225/85 R15 235/70 R15 235/75 R15 /40 R15 245/75 R15 255/70 RAL 265/70 R15 | 7 R16 7.5 R16 35/12.5 R16 35/13.5 R16 37/12.  5 R16 175 R16 175/60 R16 /75 R16 175/80 R16 185/50 R16 185/55 R16 185/60 R16 185/75 R16 185/85 R16 195 r16 9005/40 R16 195/45 R16 /50 R16 195/55 R16 9005 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 195 19AL /60 R16 195/65 R16 195/70 R16 195/75 R16 205 R16 205/40 R16 205/45 R16 205/50 R16 205/55 R16 205/60 R16 205/65/65/65/65/65/65/65/65/65/65/65/65/65/65/65/65/65/65/65/65/65/65/65IE R16 205/70 R16 205/75 R16 205/80 R16 215/45 R16 215/55 R16 /60 R16 215/65 R16 /70 R16 215/75 R16 215/80 R16 215/85 R16 225/45 R16 225/50 R16 225/55 R16 225/60 R16 225/65 R16 225/70 R16 225/75 R16 235/60 RAL 235/65 R16 235/70 R16 235/75 R16 235/85 R16 245/70 R16 245/75 R16 255/65 R16 /70 R16 255/85 R16 265/70 RAB 265/75 R16 275/60 R16 275/70 R16 285/75 R16 305/70 R16 315/75 R16 | 33/12. 5 R17 9005/12.5 R17 9005 37/12.5 R17 39/13.5 R17 40/13.5 R17 185/45 R17 195/40 R17 195/45 R17 205/40 R17 /45 R17 205/50 R17 205/55 R17 205/60 R17 205/65 R17 205/70 R17 215/35 R17 215/40 R17 215/45 R17 215/50 R17 /55 R17 215/60 R17 215/65 R17 | 215/70 R17 155/70 R19 205/55 R19 215/35 R19 215/50 R19 225/35 R19 225/40 RAL R19 225/50 R19 225/55 R19 235/35 R19 235/40 R19 235/45 R19 235/50 R19 /55 R19 235/60 R19 /65 R19 245/30 RAL 245/35 R19 245/40 R19 245/45 R19 245/50 R19 245/55 R19 255/30 R19 9005/35 R19 255/40 R19 /45 R19 255/50 R19 R19 255/55 R19 255/60 R19 255/65 R19 265/30 R19 265/35 R19 265/40 R19 265/4 R19 265/50 R19 265/55 R19 9005 275 275 275/30 RA 275/ 295/35 R19 295/40 R19 295/45 R19 305/30 R19 325/30 R19 |
| R20 | R21 | R22 | R23 | R24 |
|---|---|---|---|---|
33/12. 5 R20 35/12.5 R20 37/12.5 R20 37/13.5 R20 40/13.5 R20 155/60 R20 175/55 R20 195/55 R20 215/45 R20 225/30 R20 225/35 R20 225/40 R20 235/30 R20 R20 R20 R20 R20 235/35 R20 235/40 R20 235/45 R20 235/50 R20 235/55 R20 235/60 R20 245/30 R20 245/35 R20 245/40 R20 245/45 R20 R20 R20 R20 R20 245/50 R20 245/60 R20 255/30 R20 255/35 R20 255/40 R20 255/45 R20 /50 R20 255/55 255/60 R20 9005 265/30 R20 R20 R20 R20 R20 nine0055 265/ 275/45 R20 275/50 R20 275/55 R20 275/60 R20 275/65 R20 285/25 R20 285/30 R20 285/35 R20 285/40 R20 285/45 R20 285/50 R20 295/25 R20 295/30 R20 295/35 R20 295/40 R20 295/45 R20 9005/25 R20 305/30 R20 /35 R20 305/40 R20 R20 R20 R20 R20 nine0055 305/50 R20 315/35 R20 325/25 R20 325/35 R20 335/30 R20 | 225/50 R21 235/45 R21 245/30 R21 /35 R21 245/45/45/45/45/45/40 R21 245/45 R21 255/30 R21 255/35 R21 255/40 R21 255/50 R21 265/30 R21 265/35 R21 265/40 R21 265/45 R21 9005 275/30 275/30/30/30 275/30/30/30 R21 275/35 R21 275/40 R21 275/45 R21 275/50 R21 285/30 R21 285/35 R21 285/40 R21 285/45 R21 295/25 R21 9005 29 295/30 R21 295/35 R21 295/40 R21 305/25 R21 305/30 R21 305/35 R21 315/30 R21 315/35 R21 315/40 R21 315/45 R21 325/25 R21 325/30 R21 325/40 R21 355/25 R21 | 37/12.  |
61 inches
46 inches
13 inches
52324 
2. R18
