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245/50R18 tires
245/50R18 reads off the tire sidewall: 245 mm of section width, a sidewall whose height is 50% of that width, and a 18 in mounting diameter.
- 2 models
Models
The models we carry in this size, sorted by brand.
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This size, measured
These figures are derived from the three numbers, not entered by hand: it is the same arithmetic as the size equivalence calculator.
- Sidewall height
- 122.5 mm
- Overall diameter
- 702.2 mm · 27.65 in
- Circumference
- 2,206 mm · 86.85 in
- Revolutions per mile
- 730 rev.
- Section width
- 9.65 in
- Usable mounting width
- 7 to 8.5 in
Usable mounting width is a trade rule of thumb, roughly 70 to 90% of section width. It is not a standard. The exact range is whatever the manufacturer publishes for that model.
Equivalent sizes
Sizes whose overall diameter stays within 3% of this one. The ones we carry link to their own page. These are computed suggestions, not a guarantee of fit: the vehicle manual decides.
| Size | Overall diameter | Gap | In the catalogue |
|---|---|---|---|
| 245/50R18Original size | 702.2 mm | 0 %Identical diameter | — |
| 225/60R17 | 701.8 mm | -0.06 %Within tolerance | In the catalogue |
| 275/40R19 | 702.6 mm | +0.06 %Within tolerance | In the catalogue |
| 215/45R20 | 701.5 mm | -0.1 %Within tolerance | — |
| 245/45R19 | 703.1 mm | +0.13 %Within tolerance | In the catalogue |
| 245/55R17 | 701.3 mm | -0.13 %Within tolerance | — |
| 275/35R20 | 700.5 mm | -0.24 %Within tolerance | In the catalogue |
| 245/40R20 | 704 mm | +0.26 %Within tolerance | In the catalogue |
| 245/60R16 | 700.4 mm | -0.26 %Within tolerance | — |
| 225/55R18 | 704.7 mm | +0.36 %Within tolerance | In the catalogue |
| 275/45R18 | 704.7 mm | +0.36 %Within tolerance | — |
| 225/65R16 | 698.9 mm | -0.47 %Within tolerance | In the catalogue |
| 265/55R16 | 697.9 mm | -0.61 %Within tolerance | — |
| 215/50R19 | 697.6 mm | -0.66 %Within tolerance | — |
| 275/50R17 | 706.8 mm | +0.66 %Within tolerance | — |
| 215/70R16 | 707.4 mm | +0.74 %Within tolerance | In the catalogue |
| 235/45R19 | 694.1 mm | -1.15 %Within tolerance | In the catalogue |
| 215/55R18 | 693.7 mm | -1.21 %Within tolerance | In the catalogue |
| 215/65R17 | 711.3 mm | +1.3 %Within tolerance | In the catalogue |
| 235/65R16 | 711.9 mm | +1.38 %Within tolerance | In the catalogue |
| 255/40R20 | 712 mm | +1.4 %Within tolerance | In the catalogue |
| 255/45R19 | 712.1 mm | +1.41 %Within tolerance | In the catalogue |
| 235/50R18 | 692.2 mm | -1.42 %Within tolerance | In the catalogue |
| 235/60R17 | 713.8 mm | +1.65 %Within tolerance | In the catalogue |
| 235/55R17 | 690.3 mm | -1.69 %Within tolerance | In the catalogue |
| 215/60R17 | 689.8 mm | -1.77 %Within tolerance | In the catalogue |
| 235/55R18 | 715.7 mm | +1.92 %Within tolerance | In the catalogue |
| 235/60R16 | 688.4 mm | -1.97 %Within tolerance | In the catalogue |
| 235/50R19 | 717.6 mm | +2.19 %For reference only | In the catalogue |
| 255/40R19 | 686.6 mm | -2.22 %For reference only | In the catalogue |
| 255/35R20 | 686.5 mm | -2.24 %For reference only | In the catalogue |
| 215/65R16 | 685.9 mm | -2.32 %For reference only | In the catalogue |
| 225/45R19 | 685.1 mm | -2.44 %For reference only | In the catalogue |
| 235/45R20 | 719.5 mm | +2.46 %For reference only | In the catalogue |
| 225/70R16 | 721.4 mm | +2.73 %For reference only | In the catalogue |
| 225/50R18 | 682.2 mm | -2.85 %For reference only | In the catalogue |
Other ways to browse
Every size, every brand and every season has its own page: the models offered, the technical sheet and the equivalents.