285/60R20 Tire Size in Inches and Millimeters
285/60R20 tires have a diameter of 33.5" (850 mm), a tread width of 11.2" (285 mm), and a wheel diameter of 20" (508 mm).The sidewall of the tire is 6.7" (171 mm), and the tire's circumference is 105.2" (2669 mm). This means a 285/60R20 tire will make make 602 revolutions per mile, or 375 revolutions per kilometer.
11.2"
33.5"
105.2"
20"
6.7"
602 Revs/Mile
| Spec | Inches | Metric |
|---|---|---|
| Diameter | 33.5" | 850 mm |
| Width | 11.2" | 285 mm |
| Wheel | 20" | 508 mm |
| Sidewall | 6.7" | 171 mm |
| Circum | 105.2" | 2669 mm |
| Revolutions | 602 per mile | 375 per km |
What Does 285/60R20 Mean?
The tire size 285/60R20 is a common size used on many trucks, SUVs, and other larger vehicles.
Here is what each part of the size designation represents:
- 285: This number represents the width of the tire in millimeters. In this case, the tire is 285 millimeters wide.
- 60: This number represents the aspect ratio of the tire, which is the height of the tire's sidewall as a percentage of its width. In this case, the sidewall height is 60% of the tire's width.
- R: This letter indicates the tire's construction type. “R” stands for radial construction, which is the most common type of tire construction today.
- 20: This number represents the diameter of the wheel that the tire is designed to fit on, in inches. In this case, the tire is designed to fit on a 20-inch wheel.
How To Convert 285/60R20 Into Inches
The 285/60R20 conversion is fairly simple. The first number in the tire size, 285, represents the width of the tire in millimeters. To convert this to inches, we divide 285 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 11.2 inches.
The second number in the tire size, 60, represents the aspect ratio or the height of the tire as a percentage of its width. To calculate the height in inches, we multiply 11.2 by 0.60, which gives us approximately 6.7 inches.
Finally, the last number in the tire size, 20, represents the diameter of the wheel rim in inches. Therefore, the tire size 285/60R20 can be expressed in inches as roughly 11.2 inches wide, 6.7 inches tall, and designed to fit a 20-inch wheel rim.
Best 285/60R20 Tire
ATTURO Trail Blade ATS All-Terrain Tire, LT285/60R20 125/122Q
- PAVEMENT TO GRAVEL AND BACK BEFORE LUNCH: You switch between surfaces regularly and the tire keeps up. Deep tread blocks and aggressive siping give grip on gravel, packed dirt, and wet pavement. The center rib holds the tire steady on the highway in between. All-terrain capability with all-season confidence.
- LOOKS MEAN. ACTS POLITE: You want the aggressive sidewall and the deep tread pattern, but you also want a quiet cabin on the highway. Tie bars link the shoulder and center tread blocks to reduce road noise. The result: a tire that turns heads in the parking lot and keeps the conversation going inside the cab.
- SNOW, SLUSH, AND THE MORNING COMMUTE: The Trail Blade ATS carries the 3-Peak Mountain Snowflake certification (2024 and newer production). Three-dimensional sipes bite into snow and ice. Wide channels flush water, mud, and slush from the contact patch. All-season traction backed by a winter-rated symbol.
- 50,000 MILES OF WARRANTY AND EVERY ONE COUNTS: You prioritize longevity and the Trail Blade ATS delivers. The three-dimensional sipes widen throughout the life of the tire to maintain traction as the tread wears. Tie bars between the shoulder and center tread blocks promote even wear across the full face. 50,000-mile warranty backs every set.
- FITS TRUCKS, SUVS, JEEPS, AND CROSSOVERS: Sizes from 16 to 26-inch rims in metric and flotation. LT sizes up to 12-ply for heavy loads. UTQG rated 540 A B (passenger sizes). From a 225/60R17 on a crossover to a 37x13.50R18LT on a lifted truck. The ATS covers the full range.
Frequently Asked Questions About 285/60R20 Tires
How tall is a 285/60R20 tire?
A 285/60R20 tire has an approximate height, also known as the overall diameter, of 33.5 inches (850 mm). This height can vary slightly depending on the brand and model of the tire, as well as the amount of air pressure in the tire.How wide is a 285/60R20 tire?
A 285/60R20 tire has a width of approximately 11.2 inches (285 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “285”. It’s important to note that the actual width of the tire may vary slightly depending on the brand and model of the tire, and the width may also be affected by the amount of air pressure in the tire.Understanding Tire Speed Ratings
When choosing the right tires for your vehicle, understanding the speed rating is crucial. But what exactly is a speed rating, and why does it matter?What is a Tire Speed Rating?
A tire's speed rating indicates the maximum speed a tire can safely sustain over time. It's a manufacturer's assurance of tire performance, marked by a letter on the tire's sidewall. This rating is determined under controlled laboratory conditions and is part of a broader standard established by industry entities like the European Tyre and Rim Technical Organisation (ETRTO) and the U.S. Department of Transportation.Common Speed Ratings Explained
- P-Rated: Up to 94 mph - Suitable for smaller sedans or light-duty vehicles.
- Q-Rated: Up to 100 mph - Often found on SUVs and light trucks with consistent highway use.
- R-Rated: Up to 106 mph - Typically for medium-duty trucks and vans.
- S-Rated: Up to 112 mph - Common for family sedans and larger vehicles with moderate performance.
- T-Rated: Up to 118 mph - Optimal for family vehicles, including minivans and some coupes.
Why is the Speed Rating Important?
The speed rating is not just about how fast you can legally drive; it's about safety and performance:- Ensures Safety: It guarantees that the tire can handle certain speeds without overheating and failing, which can prevent blowouts.
- Optimizes Performance: Higher ratings often indicate better handling characteristics, important for maintaining vehicle stability.
- Legal and Insurance Considerations: Matching the speed rating suggested by your vehicle manufacturer can be essential for insurance and warranty purposes.
Alternate 285/60R20 Replacement Tire Sizes
Upsizing your wheels or tires? Replacement tires must be within 3% of the diametor of the original tire. The following sizes fall within that range - click on any size to see detailed info about that tire and wheel combination.
| Size | Diameter | Width | Wheel |
|---|---|---|---|
| 235/85R17 | 32.8" | 832 mm | 17 mm |
| 255/80R17 | 33.1" | 840 mm | 17 mm |
| 255/85R16 | 33.1" | 840 mm | 16 mm |
| 265/50R22 | 32.5" | 825 mm | 22 mm |
| 265/60R20 | 32.5" | 826 mm | 20 mm |
| 265/70R18 | 32.6" | 829 mm | 18 mm |
| 265/80R16 | 32.7" | 830 mm | 16 mm |
| 275/25R28 | 33.4" | 849 mm | 28 mm |
| 275/50R22 | 32.9" | 835 mm | 22 mm |
| 275/55R22 | 33.9" | 861 mm | 22 mm |
| 275/60R20 | 33" | 838 mm | 20 mm |
| 275/65R20 | 34.1" | 866 mm | 20 mm |
| 275/70R18 | 33.2" | 843 mm | 18 mm |
| 275/80R17 | 34.3" | 872 mm | 17 mm |
| 285/40R24 | 33" | 838 mm | 24 mm |
| 285/50R22 | 33.3" | 845 mm | 22 mm |
| 285/55R22 | 34.4" | 873 mm | 22 mm |
| 285/60R20 | 33.5" | 850 mm | 20 mm |
| 285/65R18 | 32.6" | 827 mm | 18 mm |
| 285/70R17 | 32.8" | 832 mm | 17 mm |
| 285/70R18 | 33.7" | 857 mm | 18 mm |
| 285/75R16 | 32.8" | 834 mm | 16 mm |
| 285/75R17 | 33.9" | 860 mm | 17 mm |
| 295/25R28 | 33.8" | 859 mm | 28 mm |
| 295/30R26 | 33" | 838 mm | 26 mm |
| 295/40R24 | 33.3" | 846 mm | 24 mm |
| 295/45R22 | 32.5" | 825 mm | 22 mm |
| 295/50R22 | 33.7" | 855 mm | 22 mm |
| 295/55R20 | 32.8" | 832 mm | 20 mm |
| 295/60R20 | 33.9" | 862 mm | 20 mm |
| 295/65R18 | 33.1" | 841 mm | 18 mm |
| 295/70R17 | 33.3" | 846 mm | 17 mm |
| 295/70R18 | 34.3" | 871 mm | 18 mm |
| 295/75R16 | 33.4" | 848 mm | 16 mm |
| 295/75R17 | 34.4" | 874 mm | 17 mm |
| 305/30R26 | 33.2" | 844 mm | 26 mm |
| 305/35R26 | 34.4" | 874 mm | 26 mm |
| 305/40R23 | 32.6" | 828 mm | 23 mm |
| 305/40R24 | 33.6" | 854 mm | 24 mm |
| 305/45R22 | 32.8" | 833 mm | 22 mm |
| 305/50R22 | 34.1" | 865 mm | 22 mm |
| 305/55R20 | 33.2" | 844 mm | 20 mm |
| 305/60R20 | 34.4" | 874 mm | 20 mm |
| 305/65R17 | 32.6" | 828 mm | 17 mm |
| 305/65R18 | 33.6" | 853 mm | 18 mm |
| 305/70R16 | 32.8" | 834 mm | 16 mm |
| 305/70R17 | 33.9" | 860 mm | 17 mm |
| 305/75R16 | 34" | 864 mm | 16 mm |
| 315/35R24 | 32.7" | 830 mm | 24 mm |
| 315/45R22 | 33.2" | 843 mm | 22 mm |
| 315/50R22 | 34.4" | 875 mm | 22 mm |
| 315/70R16 | 33.4" | 848 mm | 16 mm |
| 315/70R17 | 34.4" | 874 mm | 17 mm |
| 325/45R22 | 33.5" | 851 mm | 22 mm |
| 325/50R20 | 32.8" | 834 mm | 20 mm |
| 325/60R18 | 33.3" | 847 mm | 18 mm |
| 345/60R18 | 34.3" | 871 mm | 18 mm |
| 355/40R22 | 33.2" | 843 mm | 22 mm |
| 355/50R20 | 34" | 864 mm | 20 mm |
| 375/45R20 | 33.3" | 846 mm | 20 mm |
| 375/50R18 | 32.8" | 833 mm | 18 mm |