tire

Tire Size Calculator

Calculate tire sizes in inches or millimeters and find alternative sizes.
Tread Width: 305
Aspect Ratio: 60
Wheel Diameter: 18
Inches
Millimeters

Results for 305/60R18 Tires

disc wheel
Diameter
32.4"
tire width
Width
12"
disc wheel
Sidewall
7.2"
tire circumference
Circumference
101.8"
tire rpm
Revs per mile
623

Alternate Tire Sizes

18"
16"
17"
19"
20"
21"
22"
23"
24"
26"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile
285/60R18
31,5"
-2.86%
11,2"
6,7"
98,8"
641
265/65R18
31,6"
-2.53%
10,4"
6,8"
99,1"
639
275/65R18
32,1"
-0.93%
10,8"
7,0"
100,7"
629
Best fit
255/70R18
32,1"
-0.93%
10,0"
7,0"
100,7"
630
Best fit
305/60R18
32,4"
0%
12,0"
7,2"
101,8"
623
Best fit
265/70R18
32,6"
0.61%
10,4"
7,3"
102,4"
619
Best fit
285/65R18
32,6"
0.61%
11,2"
7,3"
102,3"
619
Best fit
295/65R18
33,1"
2.11%
11,6"
7,5"
103,9"
610
275/70R18
33,2"
2.41%
10,8"
7,6"
104,1"
609