Comparison of tire sizes 185/80 R15 and 195/75 R15
185/80R15
185
Tire width 
80
Profile height 
R15
Tire diameter 
470
RPM per km 185mm148mm677mm2127mm
185
80
15
195
75
15
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 677 | 674 | -3 (-0.4%) | ||
| Width, mm | 185 | 195 | +10 (+5.4%) | ||
| Circumference, mm | 2127 | 2116 | -11 (-0.5%) | ||
| Profile height, mm | 148 | 146 | -2 (-1.4%) | ||
| RPM per km | 470 | 473 | +3 (+0.6%) | ||
| Clearance change, mm | -2 | ||||
| Result: | The diameter differs by -0.4%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 99.5 |
| Difference (km/h) | -0.5 |
Sizes for comparison of tires 185/80 R15
R15
R14 -1
R16 +1
R17 +2
Sizes for comparison of tires 195/75 R15
R15
R14 -1
R16 +1
R17 +2
