Comparison of tire sizes 195/70 R14 and 175/70 R15
195/70R14
195
Tire width 
70
Profile height 
R14
Tire diameter 
506
RPM per km 195mm137mm629mm1975mm
195
70
14
175
70
15
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 629 | 626 | -3 (-0.5%) | ||
| Width, mm | 195 | 175 | -20 (-10.3%) | ||
| Circumference, mm | 1975 | 1967 | -8 (-0.4%) | ||
| Profile height, mm | 137 | 122 | -15 (-10.9%) | ||
| RPM per km | 506 | 508 | +2 (+0.4%) | ||
| Clearance change, mm | -2 | ||||
| Result: | The diameter differs by -0.5%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 99.6 |
| Difference (km/h) | -0.4 |
Sizes for comparison of tires 195/70 R14
R14
R15 +1
R16 +2
Sizes for comparison of tires 175/70 R15
R15
R14 -1
R16 +1
R13 -2
R17 +2