Comparison of tire sizes 335/30 R18 and 325/30 R18
335/30R18
335
Tire width 
30
Profile height 
R18
Tire diameter 
484
RPM per km 335mm101mm658mm2068mm
335
30
18
325
30
18
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 658 | 652 | -6 (-0.9%) | ||
| Width, mm | 335 | 325 | -10 (-3%) | ||
| Circumference, mm | 2068 | 2049 | -19 (-0.9%) | ||
| Profile height, mm | 101 | 98 | -3 (-3%) | ||
| RPM per km | 484 | 488 | +4 (+0.8%) | ||
| Clearance change, mm | -3 | ||||
| Result: | The diameter differs by -0.9%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 99.1 |
| Difference (km/h) | -0.9 |
Sizes for comparison of tires 335/30 R18
R18
R17 -1
R19 +1
R20 +2
Sizes for comparison of tires 325/30 R18
R18
R17 -1
R19 +1
R20 +2
