Comparison of tire sizes 285/75 R16 and 305/65 R17
285/75R16
285
Tire width 
75
Profile height 
R16
Tire diameter 
382
RPM per km 285mm214mm834mm2620mm
285
75
16
305
65
17
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 834 | 828 | -6 (-0.7%) | ||
| Width, mm | 285 | 305 | +20 (+7%) | ||
| Circumference, mm | 2620 | 2602 | -18 (-0.7%) | ||
| Profile height, mm | 214 | 198 | -16 (-7.5%) | ||
| RPM per km | 382 | 384 | +2 (+0.5%) | ||
| Clearance change, mm | -3 | ||||
| Result: | The diameter differs by -0.7%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 99.3 |
| Difference (km/h) | -0.7 |
Sizes for comparison of tires 285/75 R16
R16
R17 +1
R18 +2
Sizes for comparison of tires 305/65 R17
R17
R16 -1
R18 +1