Comparison of tire sizes 195/80 R14 and 225/70 R15
195/80R14
195
Tire width 
80
Profile height 
R14
Tire diameter 
477
RPM per km 195mm156mm668mm2097mm
195
80
14
225
70
15
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 668 | 696 | +28 (+4.2%) | ||
| Width, mm | 195 | 225 | +30 (+15.4%) | ||
| Circumference, mm | 2097 | 2187 | +90 (+4.3%) | ||
| Profile height, mm | 156 | 158 | +2 (+1.3%) | ||
| RPM per km | 477 | 457 | -20 (-4.2%) | ||
| Clearance change, mm | +14 | ||||
| Result: | The diameter differs by 4.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 104.3 |
| Difference (km/h) | 4.3 |
Sizes for comparison of tires 195/80 R14
R14
R15 +1
R16 +2
Sizes for comparison of tires 225/70 R15
R15
R14 -1
R16 +1
R17 +2