Comparison of tire sizes 235/65 R17 and 245/70 R17
235/65R17
235
Tire width 
65
Profile height 
R17
Tire diameter 
432
RPM per km 235mm153mm737mm2316mm
235
65
17
245
70
17
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 737 | 775 | +38 (+5.2%) | ||
| Width, mm | 235 | 245 | +10 (+4.3%) | ||
| Circumference, mm | 2316 | 2434 | +118 (+5.1%) | ||
| Profile height, mm | 153 | 172 | +19 (+12.4%) | ||
| RPM per km | 432 | 411 | -21 (-4.9%) | ||
| Clearance change, mm | +19 | ||||
| Result: | The diameter differs by 5.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 105.1 |
| Difference (km/h) | 5.1 |
Sizes for comparison of tires 235/65 R17
R17
R16 -1
R18 +1
R15 -2
R19 +2
Sizes for comparison of tires 245/70 R17
R17
R16 -1
R18 +1
R15 -2
R19 +2