Comparison of tire sizes 245/50 R19 and 235/65 R18
245/50R19
245
Tire width 
50
Profile height 
R19
Tire diameter 
437
RPM per km 245mm123mm728mm2286mm
245
50
19
235
65
18
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 728 | 763 | +35 (+4.8%) | ||
| Width, mm | 245 | 235 | -10 (-4.1%) | ||
| Circumference, mm | 2286 | 2396 | +110 (+4.8%) | ||
| Profile height, mm | 123 | 153 | +30 (+24.4%) | ||
| RPM per km | 437 | 417 | -20 (-4.6%) | ||
| Clearance change, mm | +18 | ||||
| Result: | The diameter differs by 4.8%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 104.8 |
| Difference (km/h) | 4.8 |
Sizes for comparison of tires 245/50 R19
R19
R18 -1
R20 +1
R17 -2
R21 +2
Sizes for comparison of tires 235/65 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2