Inputs
Enter your stock tire size :
165
175
185
195
205
215
225
235
245
255
265
275
285
295
305
315
/
30
35
40
45
50
55
60
65
70
75
80
85
- R
8.5
9
9.5
10
11
12
13
14
15
16
17
18
19
20
Enter the new tire size :
165
175
185
195
205
215
225
235
245
255
265
275
285
295
305
315
/
30
35
40
45
50
55
60
65
70
75
80
85
- R
8.5
9
9.5
10
11
12
13
14
15
16
17
18
19
20
Please enter a speedometer reading:
MPH or KM/H
Calculations
Stock tire width is
inches.
New tire width is
inches.
Stock tire thickness is
inches.
New tire thickness is
inches.
Stock tire diameter is
inches.
New tire diameter is
inches.
When your speedometer indicates
MPH / KM/H, you would actually be travelling
MPH or KM/H.