Comparison of tire sizes 185/65 R14 and 165/70 R14
185/65R14
185
Tire width 
65
Profile height 
R14
Tire diameter 
534
RPM per km 185mm120mm596mm1873mm
185
65
14
165
70
14
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 596 | 587 | -9 (-1.5%) | ||
| Width, mm | 185 | 165 | -20 (-10.8%) | ||
| Circumference, mm | 1873 | 1843 | -30 (-1.6%) | ||
| Profile height, mm | 120 | 115 | -5 (-4.2%) | ||
| RPM per km | 534 | 543 | +9 (+1.7%) | ||
| Clearance change, mm | -5 | ||||
| Result: | The diameter differs by -1.5%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 98.4 |
| Difference (km/h) | -1.6 |
Sizes for comparison of tires 185/65 R14
R14
R13 -1
R15 +1
R16 +2
Sizes for comparison of tires 165/70 R14
R14
R13 -1
R15 +1
R16 +2
