Comparison of tire sizes 265/35 R17 and 265/35 R18
265/35R17
265
Tire width 
35
Profile height 
R17
Tire diameter 
516
RPM per km 265mm93mm617mm1939mm
265
35
17
265
35
18
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 617 | 643 | +26 (+4.2%) | ||
| Width, mm | 265 | 265 | 0 (0%) | ||
| Circumference, mm | 1939 | 2019 | +80 (+4.1%) | ||
| Profile height, mm | 93 | 93 | 0 (0%) | ||
| RPM per km | 516 | 495 | -21 (-4.1%) | ||
| Clearance change, mm | +13 | ||||
| Result: | The diameter differs by 4.2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 104.1 |
| Difference (km/h) | 4.1 |
Sizes for comparison of tires 265/35 R17
R17
R16 -1
R18 +1
R15 -2
R19 +2
Sizes for comparison of tires 265/35 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2