Comparison of tire sizes 185/65 R15 and 195/65 R14
185/65R15
185
Tire width 
65
Profile height 
R15
Tire diameter 
512
RPM per km 185mm120mm622mm1952mm
185
65
15
195
65
14
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 622 | 609 | -13 (-2.1%) | ||
| Width, mm | 185 | 195 | +10 (+5.4%) | ||
| Circumference, mm | 1952 | 1914 | -38 (-1.9%) | ||
| Profile height, mm | 120 | 127 | +7 (+5.8%) | ||
| RPM per km | 512 | 523 | +11 (+2.1%) | ||
| Clearance change, mm | -7 | ||||
| Result: | The diameter differs by -2.1%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 98.1 |
| Difference (km/h) | -1.9 |
Sizes for comparison of tires 185/65 R15
R15
R14 -1
R16 +1
R13 -2
R17 +2
Sizes for comparison of tires 195/65 R14
R14
R13 -1
R15 +1
R16 +2
