Gear Ratio Calculator
Tire Size
Min. RPM
Max. RPM
135
145
155
165
175
185
195
205
215
225
235
245
255
265
275
285
295
305
315
325
335
25
30
35
40
45
50
55
60
65
70
75
80
12
13
14
15
16
17
18
19
20
21
22
23
1
2
3
4
5
6
Final
12.956
7.73
4.93
3.727
2.883
0
Overall
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2005 WRX
2008-2009 Legacy Spec B
2010 STi
2008 STi
2007 STi
2004-2006 STi
JDM 6MT