tire

Tire Size Calculator

Calculate tire sizes in inches or millimeters and find alternative sizes.
Tread Width: 225
Aspect Ratio: 30
Wheel Diameter: 20
Inches
Millimeters

Results for 225/30R20 Tires

disc wheel
Diameter
25.3"
tire width
Width
8.9"
disc wheel
Sidewall
2.7"
tire circumference
Circumference
79.5"
tire rpm
Revs per mile
797

Alternate Tire Sizes

20"
14"
15"
16"
17"
18"
19"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile
215/30R20
25,1"
-0.8%
8,5"
2,5"
78,7"
805
Best fit
265/25R20
25,2"
-0.4%
10,4"
2,6"
79,2"
800
Best fit
225/30R20
25,3"
0%
8,9"
2,7"
79,5"
797
Best fit
275/25R20
25,4"
0.39%
10,8"
2,7"
79,8"
794
Best fit
285/25R20
25,6"
1.17%
11,2"
2,8"
80,4"
788
235/30R20
25,6"
1.17%
9,3"
2,8"
80,2"
790
245/30R20
25,8"
1.94%
9,6"
2,9"
81,0"
783
295/25R20
25,8"
1.94%
11,6"
2,9"
81,0"
782
305/25R20
26,0"
2.69%
12,0"
3,0"
81,7"
776
255/30R20
26,0"
2.69%
10,0"
3,0"
81,7"
775