275/70R17 Tire Size in Inches and Millimeters
275/70R17 tires have a diameter of 32.2" (818 mm), a tread width of 10.8" (275 mm), and a wheel diameter of 17" (431.8 mm).The sidewall of the tire is 7.6" (193 mm), and the tire's circumference is 101.1" (2568.5 mm). This means a 275/70R17 tire will make make 627 revolutions per mile, or 389 revolutions per kilometer.
| Spec | Inches | Metric |
|---|---|---|
| Diameter | 32.2" | 818 mm |
| Width | 10.8" | 275 mm |
| Wheel | 17" | 431.8 mm |
| Sidewall | 7.6" | 193 mm |
| Circum | 101.1" | 2568.5 mm |
| Revolutions | 627 per mile | 389 per km |
What Does 275/70R17 Mean?
The tire size 275/70R17 is a common size used on many trucks, SUVs, and other larger vehicles.
Here is what each part of the size designation represents:
- 275: This number represents the width of the tire in millimeters. In this case, the tire is 275 millimeters wide.
- 70: 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 70% 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.
- 17: 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 17-inch wheel.
How To Convert 275/70R17 Into Inches
The 275/70R17 conversion is fairly simple. The first number in the tire size, 275, represents the width of the tire in millimeters. To convert this to inches, we divide 275 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 10.8 inches.
The second number in the tire size, 70, represents the aspect ratio or the height of the tire as a percentage of its width. To calculate the height in inches, we multiply 10.8 by 0.70, which gives us approximately 7.6 inches.
Finally, the last number in the tire size, 17, represents the diameter of the wheel rim in inches. Therefore, the tire size 275/70R17 can be expressed in inches as roughly 10.8 inches wide, 7.6 inches tall, and designed to fit a 17-inch wheel rim.
Frequently Asked Questions About 275/70R17 Tires
How tall is a 275/70R17 tire?
A 275/70R17 tire has an approximate height, also known as the overall diameter, of 32.2 inches (818 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 275/70R17 tire?
A 275/70R17 tire has a width of approximately 10.8 inches (275 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “275”. 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 275/70R17 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 |
|---|---|---|---|
| 225/75R18 | 31.3" | 795 mm | 18 mm |
| 225/90R16 | 32" | 812 mm | 16 mm |
| 235/75R18 | 31.9" | 809 mm | 18 mm |
| 235/80R17 | 31.8" | 808 mm | 17 mm |
| 235/85R16 | 31.7" | 806 mm | 16 mm |
| 235/85R17 | 32.8" | 832 mm | 17 mm |
| 245/60R20 | 31.6" | 802 mm | 20 mm |
| 245/70R18 | 31.5" | 801 mm | 18 mm |
| 245/75R17 | 31.5" | 800 mm | 17 mm |
| 255/30R26 | 32" | 814 mm | 26 mm |
| 255/60R20 | 32" | 814 mm | 20 mm |
| 255/65R19 | 32.1" | 815 mm | 19 mm |
| 255/70R18 | 32.1" | 815 mm | 18 mm |
| 255/75R17 | 32" | 814 mm | 17 mm |
| 255/80R17 | 33.1" | 840 mm | 17 mm |
| 255/85R16 | 33.1" | 840 mm | 16 mm |
| 265/45R22 | 31.4" | 797 mm | 22 mm |
| 265/50R22 | 32.5" | 825 mm | 22 mm |
| 265/60R20 | 32.5" | 826 mm | 20 mm |
| 265/65R18 | 31.5" | 801 mm | 18 mm |
| 265/70R17 | 31.7" | 804 mm | 17 mm |
| 265/70R18 | 32.6" | 829 mm | 18 mm |
| 265/75R16 | 31.7" | 804 mm | 16 mm |
| 265/80R16 | 32.7" | 830 mm | 16 mm |
| 275/25R26 | 31.4" | 798 mm | 26 mm |
| 275/40R23 | 31.7" | 804 mm | 23 mm |
| 275/45R22 | 31.8" | 807 mm | 22 mm |
| 275/50R21 | 31.9" | 809 mm | 21 mm |
| 275/50R22 | 32.9" | 835 mm | 22 mm |
| 275/55R20 | 31.9" | 810 mm | 20 mm |
| 275/60R20 | 33" | 838 mm | 20 mm |
| 275/65R18 | 32.1" | 815 mm | 18 mm |
| 275/70R17 | 32.2" | 818 mm | 17 mm |
| 285/35R24 | 31.9" | 810 mm | 24 mm |
| 285/40R23 | 32" | 812 mm | 23 mm |
| 285/40R24 | 33" | 838 mm | 24 mm |
| 285/45R22 | 32.1" | 815 mm | 22 mm |
| 285/50R20 | 31.3" | 794 mm | 20 mm |
| 285/55R19 | 31.4" | 797 mm | 19 mm |
| 285/55R20 | 32.4" | 822 mm | 20 mm |
| 285/60R18 | 31.5" | 799 mm | 18 mm |
| 285/65R17 | 31.6" | 802 mm | 17 mm |
| 285/65R18 | 32.6" | 827 mm | 18 mm |
| 285/70R16 | 31.7" | 806 mm | 16 mm |
| 285/70R17 | 32.8" | 832 mm | 17 mm |
| 285/75R16 | 32.8" | 834 mm | 16 mm |
| 295/25R26 | 31.8" | 808 mm | 26 mm |
| 295/30R26 | 33" | 838 mm | 26 mm |
| 295/35R24 | 32.1" | 816 mm | 24 mm |
| 295/40R22 | 31.3" | 795 mm | 22 mm |
| 295/45R22 | 32.5" | 825 mm | 22 mm |
| 295/50R20 | 31.7" | 804 mm | 20 mm |
| 295/55R20 | 32.8" | 832 mm | 20 mm |
| 295/65R18 | 33.1" | 841 mm | 18 mm |
| 305/25R26 | 32" | 812 mm | 26 mm |
| 305/35R23 | 31.4" | 798 mm | 23 mm |
| 305/35R24 | 32.4" | 824 mm | 24 mm |
| 305/40R22 | 31.6" | 803 mm | 22 mm |
| 305/40R23 | 32.6" | 828 mm | 23 mm |
| 305/45R22 | 32.8" | 833 mm | 22 mm |
| 305/50R20 | 32" | 814 mm | 20 mm |
| 305/60R17 | 31.4" | 798 mm | 17 mm |
| 305/60R18 | 32.4" | 823 mm | 18 mm |
| 305/65R17 | 32.6" | 828 mm | 17 mm |
| 305/70R15 | 31.9" | 809 mm | 15 mm |
| 305/70R16 | 32.8" | 834 mm | 16 mm |
| 315/30R24 | 31.5" | 800 mm | 24 mm |
| 315/35R24 | 32.7" | 830 mm | 24 mm |
| 315/45R21 | 32.2" | 817 mm | 21 mm |
| 315/50R20 | 32.4" | 824 mm | 20 mm |
| 315/70R15 | 32.4" | 823 mm | 15 mm |
| 325/35R23 | 32" | 812 mm | 23 mm |
| 325/40R22 | 32.2" | 819 mm | 22 mm |
| 325/50R20 | 32.8" | 834 mm | 20 mm |
| 335/30R24 | 32" | 812 mm | 24 mm |
| 345/55R17 | 32" | 812 mm | 17 mm |
| 375/50R18 | 32.8" | 833 mm | 18 mm |
| 375/55R16 | 32.2" | 818 mm | 16 mm |
| 405/25R24 | 32" | 812 mm | 24 mm |