| DIAMETER, ROLLOUT (CIRCUMFERENCE) AND REVOLUTIONS PER MILE CHART |
| |
| Below is a chart to assist in vehicle drive-train calculations. |
|
Diameter
|
Rollout
|
Revs/Mile*
|
|---|
|
17.5
|
55.0
|
1222
|
|
18
|
56.5
|
1186
|
|
18.5
|
58.1
|
1152
|
|
19
|
59.7
|
1120
|
|
19.5
|
61.3
|
1090
|
|
20
|
62.8
|
1061
|
|
22
|
69.1
|
960
|
|
22.5
|
70.7
|
938
|
|
23
|
72.3
|
917
|
|
23.5
|
73.8
|
896
|
|
24
|
75.4
|
877
|
|
24.5
|
77.0
|
858
|
|
25
|
78.5
|
840
|
|
25.5
|
80.1
|
823
|
|
26
|
81.7
|
807
|
|
26.5
|
83.3
|
791
|
|
27
|
84.8
|
776
|
|
27.5
|
86.4
|
761
|
|
28
|
88.0
|
747
|
|
28.5
|
89.5
|
733
|
|
29
|
91.1
|
720
|
|
29.5
|
92.7
|
708
|
|
30
|
94.2
|
695
|
|
30.5
|
95.8
|
684
|
|
31
|
97.4
|
672
|
|
31.5
|
99.0
|
661
|
|
32
|
100.5
|
651
|
|
32.5
|
102.1
|
640
|
|
33
|
103.7
|
630
|
|
33.5
|
105.2
|
621
|
|
34
|
106.8
|
611
|
|
34.5
|
108.4
|
602
|
|
35
|
110.0
|
593
|
|
35.5
|
111.5
|
585
|
|
36
|
113.1
|
576
|
|
36.5
|
114.7
|
568
|
|
37
|
116.2
|
560
|
|
37.5
|
117.8
|
553
|
|
38
|
119.4
|
545
|
|
38.5
|
121.0
|
538
|
|
39.5
|
124.1
|
524
|
|
40
|
125.7
|
517
|
|
45.5
|
142.9
|
453
|
|
46
|
144.5
|
448
|
|
53
|
166.5
|
388
|
|
53.5
|
168.1
|
384
|
|
54
|
169.6
|
381
|
|
| |
