Comparison of tire sizes 225/40 R19 and 235/35 R18
225/40R19
225
Tire width 
40
Profile height 
R19
Tire diameter 
480
RPM per km 225mm90mm663mm2082mm
225
40
19
235
35
18
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 663 | 622 | -41 (-6.2%) | ||
| Width, mm | 225 | 235 | +10 (+4.4%) | ||
| Circumference, mm | 2082 | 1953 | -129 (-6.2%) | ||
| Profile height, mm | 90 | 82 | -8 (-8.9%) | ||
| RPM per km | 480 | 512 | +32 (+6.7%) | ||
| Clearance change, mm | -21 | ||||
| Result: | The diameter differs by -6.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 93.8 |
| Difference (km/h) | -6.2 |
Sizes for comparison of tires 225/40 R19
R19
R18 -1
R20 +1
R17 -2
R21 +2
Sizes for comparison of tires 235/35 R18
R18
R17 -1
R19 +1
R16 -2
