Comparison of tire sizes 215/40 R18 and 225/45 R18
215/40R18
215
Tire width 
40
Profile height 
R18
Tire diameter 
506
RPM per km 215mm86mm629mm1977mm
215
40
18
225
45
18
| Parameters Sizes | Old | New | |||
|---|---|---|---|---|---|
| Diameter, mm | 629 | 660 | +31 (+4.9%) | ||
| Width, mm | 215 | 225 | +10 (+4.7%) | ||
| Circumference, mm | 1977 | 2073 | +96 (+4.9%) | ||
| Profile height, mm | 86 | 101 | +15 (+17.4%) | ||
| RPM per km | 506 | 483 | -23 (-4.5%) | ||
| Clearance change, mm | +16 | ||||
| Result: | The diameter differs by 4.9%. | ||||
| Speedometer reading (km/h) | |
|---|---|
| Real speed (km/h) | 104.9 |
| Difference (km/h) | 4.9 |
Sizes for comparison of tires 215/40 R18
R18
R17 -1
R19 +1
R16 -2
R20 +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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2Tires Bridgestone Potenza, 225/45/R18, Used.For sale Summer tires Bridgestone Potenza, 225/45/R18, In stock: 2 pc., Condition: Used.
R1825.00 €/pc.13/05/2025Riga -
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
