355/25R24 Tire Size in Inches and Millimeters
355/25R24 tires have a diameter of 31" (788 mm), a tread width of 14" (355 mm), and a wheel diameter of 24" (609.6 mm).The sidewall of the tire is 3.5" (89 mm), and the tire's circumference is 97.3" (2474.3 mm). This means a 355/25R24 tire will make make 651 revolutions per mile, or 404 revolutions per kilometer.



Spec | Inches | Metric |
---|---|---|
Diameter | 31" | 788 mm |
Width | 14" | 355 mm |
Wheel | 24" | 609.6 mm |
Sidewall | 3.5" | 89 mm |
Circum | 97.3" | 2474.3 mm |
Revolutions | 651 per mile | 404 per km |
What Does 355/25R24 Mean?
The tire size 355/25R24 is a common size used on many trucks, SUVs, and other larger vehicles.
Here is what each part of the size designation represents:
- 355: This number represents the width of the tire in millimeters. In this case, the tire is 355 millimeters wide.
- 25: 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 25% 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.
- 24: 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 24-inch wheel.

How To Convert 355/25R24 Into Inches
The 355/25R24 conversion is fairly simple. The first number in the tire size, 355, represents the width of the tire in millimeters. To convert this to inches, we divide 355 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 14 inches.
The second number in the tire size, 25, represents the aspect ratio or the height of the tire as a percentage of its width. To calculate the height in inches, we multiply 14 by 0.25, which gives us approximately 3.5 inches.
Finally, the last number in the tire size, 24, represents the diameter of the wheel rim in inches. Therefore, the tire size 355/25R24 can be expressed in inches as roughly 14 inches wide, 3.5 inches tall, and designed to fit a 24-inch wheel rim.
Frequently Asked Questions About 355/25R24 Tires
How tall is a 355/25R24 tire?
A 355/25R24 tire has an approximate height, also known as the overall diameter, of 31 inches (788 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 355/25R24 tire?
A 355/25R24 tire has a width of approximately 14 inches (355 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “355”. 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 355/25R24 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 |
---|---|---|---|
165/90R19 | 30.7" | 781 mm | 19 mm |
175/90R18 | 30.4" | 773 mm | 18 mm |
215/85R16 | 30.4" | 772 mm | 16 mm |
225/75R17 | 30.3" | 770 mm | 17 mm |
225/75R18 | 31.3" | 795 mm | 18 mm |
225/85R16 | 31" | 788 mm | 16 mm |
235/55R20 | 30.2" | 766 mm | 20 mm |
235/60R19 | 30.1" | 765 mm | 19 mm |
235/65R19 | 31.1" | 789 mm | 19 mm |
235/70R18 | 31" | 787 mm | 18 mm |
235/75R17 | 30.9" | 784 mm | 17 mm |
235/75R18 | 31.9" | 809 mm | 18 mm |
235/80R16 | 30.8" | 782 mm | 16 mm |
235/80R17 | 31.8" | 808 mm | 17 mm |
235/85R16 | 31.7" | 806 mm | 16 mm |
245/60R20 | 31.6" | 802 mm | 20 mm |
245/65R18 | 30.5" | 775 mm | 18 mm |
245/70R17 | 30.6" | 776 mm | 17 mm |
245/70R18 | 31.5" | 801 mm | 18 mm |
245/75R16 | 30.5" | 774 mm | 16 mm |
245/75R17 | 31.5" | 800 mm | 17 mm |
255/45R22 | 31.1" | 789 mm | 22 mm |
255/50R21 | 31.1" | 789 mm | 21 mm |
255/55R20 | 31" | 788 mm | 20 mm |
255/60R19 | 31.1" | 789 mm | 19 mm |
255/65R18 | 31.1" | 789 mm | 18 mm |
255/70R17 | 31.1" | 790 mm | 17 mm |
265/40R22 | 30.4" | 771 mm | 22 mm |
265/45R21 | 30.4" | 771 mm | 21 mm |
265/45R22 | 31.4" | 797 mm | 22 mm |
265/50R20 | 30.5" | 774 mm | 20 mm |
265/55R19 | 30.5" | 775 mm | 19 mm |
265/60R18 | 30.5" | 775 mm | 18 mm |
265/65R17 | 30.6" | 776 mm | 17 mm |
265/65R18 | 31.5" | 801 mm | 18 mm |
265/70R16 | 30.6" | 778 mm | 16 mm |
265/70R17 | 31.7" | 804 mm | 17 mm |
265/75R15 | 30.7" | 779 mm | 15 mm |
265/75R16 | 31.7" | 804 mm | 16 mm |
275/25R26 | 31.4" | 798 mm | 26 mm |
275/30R24 | 30.6" | 776 mm | 24 mm |
275/40R22 | 30.7" | 779 mm | 22 mm |
275/40R23 | 31.7" | 804 mm | 23 mm |
275/45R21 | 30.7" | 781 mm | 21 mm |
275/45R22 | 31.8" | 807 mm | 22 mm |
275/50R20 | 30.9" | 784 mm | 20 mm |
275/50R21 | 31.9" | 809 mm | 21 mm |
275/55R19 | 30.9" | 785 mm | 19 mm |
275/55R20 | 31.9" | 810 mm | 20 mm |
275/60R18 | 31" | 787 mm | 18 mm |
275/65R17 | 31.1" | 790 mm | 17 mm |
275/70R15 | 30.2" | 767 mm | 15 mm |
275/70R16 | 31.2" | 792 mm | 16 mm |
285/30R24 | 30.8" | 782 mm | 24 mm |
285/35R23 | 30.9" | 784 mm | 23 mm |
285/35R24 | 31.9" | 810 mm | 24 mm |
285/40R22 | 31" | 787 mm | 22 mm |
285/45R21 | 31.1" | 789 mm | 21 mm |
285/50R20 | 31.3" | 794 mm | 20 mm |
285/55R18 | 30.4" | 771 mm | 18 mm |
285/55R19 | 31.4" | 797 mm | 19 mm |
285/60R17 | 30.5" | 774 mm | 17 mm |
285/60R18 | 31.5" | 799 mm | 18 mm |
285/65R16 | 30.6" | 776 mm | 16 mm |
285/65R17 | 31.6" | 802 mm | 17 mm |
285/70R15 | 30.7" | 781 mm | 15 mm |
285/70R16 | 31.7" | 806 mm | 16 mm |
295/25R26 | 31.8" | 808 mm | 26 mm |
295/30R24 | 31" | 788 mm | 24 mm |
295/35R22 | 30.1" | 765 mm | 22 mm |
295/35R23 | 31.1" | 790 mm | 23 mm |
295/40R21 | 30.3" | 769 mm | 21 mm |
295/40R22 | 31.3" | 795 mm | 22 mm |
295/45R20 | 30.5" | 774 mm | 20 mm |
295/50R20 | 31.7" | 804 mm | 20 mm |
295/65R15 | 30.1" | 765 mm | 15 mm |
295/65R16 | 31.1" | 790 mm | 16 mm |
305/35R22 | 30.4" | 773 mm | 22 mm |
305/35R23 | 31.4" | 798 mm | 23 mm |
305/40R22 | 31.6" | 803 mm | 22 mm |
305/45R20 | 30.8" | 782 mm | 20 mm |
305/60R17 | 31.4" | 798 mm | 17 mm |
305/70R15 | 31.9" | 809 mm | 15 mm |
315/30R24 | 31.5" | 800 mm | 24 mm |
315/35R22 | 30.7" | 779 mm | 22 mm |
315/40R21 | 30.9" | 785 mm | 21 mm |
325/30R23 | 30.7" | 780 mm | 23 mm |
325/35R22 | 31" | 787 mm | 22 mm |
325/40R21 | 31.2" | 793 mm | 21 mm |
325/60R15 | 30.4" | 771 mm | 15 mm |
345/55R16 | 30.9" | 786 mm | 16 mm |
355/25R24 | 31" | 788 mm | 24 mm |