Comparison of tire sizes 185/70 R14 and 175/80 R14
185/70R14
185
Tire width 
70
Profile height 
R14
Tire diameter 
518
RPM per km 185mm130mm615mm1931mm
185
70
14
175
80
14
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 615 | 636 | +21 (+3.4%) | ||
| Width, mm | 185 | 175 | -10 (-5.4%) | ||
| Circumference, mm | 1931 | 1997 | +66 (+3.4%) | ||
| Profile height, mm | 130 | 140 | +10 (+7.7%) | ||
| RPM per km | 518 | 501 | -17 (-3.3%) | ||
| Clearance change, mm | +11 | ||||
| Result: | The diameter differs by 3.4%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 103.4 |
| Difference (km/h) | 3.4 |
Sizes for comparison of tires 185/70 R14
R14
R13 -1
R15 +1
R16 +2
Sizes for comparison of tires 175/80 R14
R14
R15 +1
R16 +2
