265/40R21 Tires

265/40R21 Conversion

When converted to inches, 265/40R21 is equivalent to 29.3x10.4R21.

265/40R21 tire has a section width of 10.4 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 21 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 4.2 inches (106 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 29.3 inches (745 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 92 inches (2339.3 mm) is the outer perimeter of the tire. Tire revolutions indicate the number of times a tire revolves while it covers the distance in miles or kilometers. 265/40R21 tire makes 689 revolutions per mile (427 revolutions per kilometer).

265/40R21 Section Width
10.4"
29.3"
265/40R21 Tire Side
Tire Circumference
92"
21"
4.2"
689 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 745 mm 29.3"
Tread Width 265 mm 10.4"
Rim Diameter 533.4 mm 21"
Sidewall Height 106 mm 4.2"
Circumference 2339.3 mm 92"
Revolutions 427 per km 689 per mile

265/40R21 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 265/40R21 tire can be replaced with 30 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
315/30R21 28.5" (723 mm) -3%
275/30R22 28.5" (725 mm) -2.7%
275/35R21 28.5" (725 mm) -2.7%
335/25R22 28.6" (727 mm) -2.4%
325/30R21 28.7" (729 mm) -2.1%
245/40R21 28.7" (729 mm) -2.1%
245/35R22 28.8" (731 mm) -1.9%
285/30R22 28.8" (731 mm) -1.9%
285/35R21 28.9" (733 mm) -1.6%
305/25R23 29" (736 mm) -1.2%
295/30R22 29" (737 mm) -1.1%
255/40R21 29" (737 mm) -1.1%
255/35R22 29" (737 mm) -1.1%
295/35R21 29.1" (739 mm) -0.8%
315/25R23 29.2" (742 mm) -0.4%
305/30R22 29.3" (743 mm) -0.3%
235/45R21 29.3" (745 mm) 0%
265/35R22 29.3" (745 mm) 0%
305/35R21 29.4" (747 mm) 0.3%
315/30R22 29.5" (749 mm) 0.5%
275/35R22 29.6" (751 mm) 0.8%
245/45R21 29.6" (753 mm) 1.1%
275/40R21 29.6" (753 mm) 1.1%
315/35R21 29.6" (753 mm) 1.1%
285/35R22 29.9" (759 mm) 1.9%
285/40R21 30" (761 mm) 2.1%
295/30R23 30" (762 mm) 2.3%
255/45R21 30" (763 mm) 2.4%
255/40R22 30" (763 mm) 2.4%
295/35R22 30.1" (765 mm) 2.7%