Comparison of tire sizes 285/65 R17 and 265/70 R17
285/65R17
285
Tire width 
65
Profile height 
R17
Tire diameter 
397
RPM per km 285mm185mm802mm2520mm
285
65
17
265
70
17
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 802 | 803 | +1 (+0.1%) | ||
| Width, mm | 285 | 265 | -20 (-7%) | ||
| Circumference, mm | 2520 | 2522 | +2 (+0.1%) | ||
| Profile height, mm | 185 | 186 | +1 (+0.5%) | ||
| RPM per km | 397 | 396 | -1 (-0.3%) | ||
| Clearance change, mm | +1 | ||||
| Result: | The diameter differs by 0.1%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 100.1 |
| Difference (km/h) | 0.1 |
Sizes for comparison of tires 285/65 R17
R17
R16 -1
R18 +1
R19 +2
Sizes for comparison of tires 265/70 R17
R17
R16 -1
R18 +1
R19 +2
