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275/55R20 tires
275/55R20 reads off the tire sidewall: 275 mm of section width, a sidewall whose height is 55% of that width, and a 20 in mounting diameter.
- 5 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
- 151.3 mm
- Overall diameter
- 810.5 mm · 31.91 in
- Circumference
- 2,546.3 mm · 100.25 in
- Revolutions per mile
- 632 rev.
- Section width
- 10.83 in
- Usable mounting width
- 7.5 to 9.5 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 |
|---|---|---|---|
| 275/55R20Original size | 810.5 mm | 0 %Identical diameter | — |
| 295/60R18 | 811.2 mm | +0.09 %Within tolerance | — |
| 275/50R21 | 808.4 mm | -0.26 %Within tolerance | — |
| 275/60R19 | 812.6 mm | +0.26 %Within tolerance | — |
| 305/50R20 | 813 mm | +0.31 %Within tolerance | — |
| 305/45R21 | 807.9 mm | -0.32 %Within tolerance | — |
| 255/50R22 | 813.8 mm | +0.41 %Within tolerance | — |
| 255/55R21 | 813.9 mm | +0.42 %Within tolerance | — |
| 295/55R19 | 807.1 mm | -0.42 %Within tolerance | — |
| 255/60R20 | 814 mm | +0.43 %Within tolerance | — |
| 255/65R19 | 814.1 mm | +0.44 %Within tolerance | — |
| 255/70R18 | 814.2 mm | +0.46 %Within tolerance | In the catalogue |
| 275/45R22 | 806.3 mm | -0.52 %Within tolerance | — |
| 275/65R18 | 814.7 mm | +0.52 %Within tolerance | In the catalogue |
| 285/45R22 | 815.3 mm | +0.59 %Within tolerance | In the catalogue |
| 245/50R22 | 803.8 mm | -0.83 %Within tolerance | — |
| 265/65R18 | 801.7 mm | -1.09 %Within tolerance | In the catalogue |
| 285/55R20 | 821.5 mm | +1.36 %Within tolerance | In the catalogue |
| 285/60R18 | 799.2 mm | -1.39 %Within tolerance | In the catalogue |
| 265/60R20 | 826 mm | +1.91 %Within tolerance | In the catalogue |
| 285/65R18 | 827.7 mm | +2.12 %For reference only | In the catalogue |
| 265/70R18 | 828.2 mm | +2.18 %For reference only | In the catalogue |
| 255/60R19 | 788.6 mm | -2.7 %For reference only | In the catalogue |
| 255/55R20 | 788.5 mm | -2.71 %For reference only | In the catalogue |
| 275/50R22 | 833.8 mm | +2.87 %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.