tire

Tire Size Calculator

Calculate tire sizes in inches or millimeters and find alternative sizes.
Tread Width: 245
Aspect Ratio: 40
Wheel Diameter: 18
Inches
Millimeters

Results for 245/40R18 Tires

disc wheel
Diameter
25.7"
tire width
Width
9.6"
disc wheel
Sidewall
3.9"
tire circumference
Circumference
80.7"
tire rpm
Revs per mile
785

Alternate Tire Sizes

18"
14"
15"
16"
17"
19"
20"
21"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile
295/30R18
25,0"
-2.8%
11,6"
3,5"
78,4"
808
255/35R18
25,0"
-2.8%
10,0"
3,5"
78,6"
806
225/40R18
25,1"
-2.39%
8,9"
3,5"
78,8"
804
265/35R18
25,3"
-1.58%
10,4"
3,7"
79,5"
798
205/45R18
25,3"
-1.58%
8,1"
3,6"
79,3"
799
315/30R18
25,4"
-1.18%
12,4"
3,7"
79,9"
793
235/40R18
25,4"
-1.18%
9,3"
3,7"
79,8"
794
275/35R18
25,6"
-0.39%
10,8"
3,8"
80,3"
789
Best fit
215/45R18
25,6"
-0.39%
8,5"
3,8"
80,4"
788
Best fit
245/40R18
25,7"
0%
9,6"
3,9"
80,7"
785
Best fit
335/30R18
25,9"
0.77%
13,2"
4,0"
81,4"
779
Best fit
285/35R18
25,9"
0.77%
11,2"
3,9"
81,2"
781
Best fit
225/45R18
26,0"
1.15%
8,9"
4,0"
81,6"
777
255/40R18
26,0"
1.15%
10,0"
4,0"
81,7"
775
295/35R18
26,1"
1.53%
11,6"
4,1"
82,0"
772
175/60R18
26,3"
2.28%
6,9"
4,1"
82,5"
768
265/40R18
26,3"
2.28%
10,4"
4,2"
82,7"
766
235/45R18
26,3"
2.28%
9,3"
4,2"
82,7"
767
195/55R18
26,4"
2.65%
7,7"
4,2"
83,0"
763
305/35R18
26,4"
2.65%
12,0"
4,2"
82,9"
764