tire

Tire Size Calculator

Calculate tire sizes in inches or millimeters and find alternative sizes.
Tread Width: 225
Aspect Ratio: 75
Wheel Diameter: 18
Inches
Millimeters

Results for 225/75R18 Tires

disc wheel
Diameter
31.3"
tire width
Width
8.9"
disc wheel
Sidewall
6.6"
tire circumference
Circumference
98.2"
tire rpm
Revs per mile
645

Alternate Tire Sizes

18"
15"
16"
17"
19"
20"
21"
22"
23"
24"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile
265/60R18
30,5"
-2.62%
10,4"
6,3"
95,8"
661
235/70R18
31,0"
-0.97%
9,3"
6,5"
97,2"
652
Best fit
275/60R18
31,0"
-0.97%
10,8"
6,5"
97,3"
651
Best fit
255/65R18
31,1"
-0.64%
10,0"
6,5"
97,5"
650
Best fit
225/75R18
31,3"
0%
8,9"
6,6"
98,2"
645
Best fit
285/60R18
31,5"
0.63%
11,2"
6,7"
98,8"
641
Best fit
265/65R18
31,6"
0.95%
10,4"
6,8"
99,1"
639
Best fit
255/70R18
32,1"
2.49%
10,0"
7,0"
100,7"
630
275/65R18
32,1"
2.49%
10,8"
7,0"
100,7"
629