Comparison of tire sizes 215/50 R17 and 225/45 R18
215/50R17
215
Tire width 
50
Profile height 
R17
Tire diameter 
492
RPM per km 215mm108mm647mm2032mm
215
50
17
225
45
18
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 647 | 660 | +13 (+2%) | ||
| Width, mm | 215 | 225 | +10 (+4.7%) | ||
| Circumference, mm | 2032 | 2073 | +41 (+2%) | ||
| Profile height, mm | 108 | 101 | -7 (-6.5%) | ||
| RPM per km | 492 | 483 | -9 (-1.8%) | ||
| Clearance change, mm | +7 | ||||
| Result: | The diameter differs by 2%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 102 |
| Difference (km/h) | 2 |
Sizes for comparison of tires 215/50 R17
R17
R16 -1
R18 +1
R15 -2
R19 +2
Sizes for comparison of tires 225/45 R18
R18
R17 -1
R19 +1
R16 -2
R20 +2
Ads by size 225/45 R18
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2NEWTires Bridgestone Potenza, 225/45/R18, Used.For sale Summer tires Bridgestone Potenza, 225/45/R18, In stock: 2 pc., Condition: Used.
R1825.00 €/pc.Yesterday 12:28Riga -
2Tires Kumho Kumho, 225/45/R18, Used.For sale All season tires Kumho Kumho, 225/45/R18, In stock: 1 pc., Condition: Used.
R1850.00 €/pc.11/05/2025Riga -
6Tires Haida HD927, 225/45/R18, Used.For sale Summer tires Haida HD927, 225/45/R18, In stock: 4 pc., Tread depth: 6 mm., Condition: Used. Brauktas vienu vasaru.
R1880 €/set28/04/2024Marupe
