
$1,199.52 for 4 · On order, delivered in 2 business days
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255/55R20 reads off the tire sidewall: 255 mm of section width, a sidewall whose height is 55% of that width, and a 20 in mounting diameter.
Every price shown is the price of this exact size, and the dot says what is ready today.

$1,199.52 for 4 · On order, delivered in 2 business days
Prices are per tire, before sales tax. You send your request online; the final amount, payment and handover are then arranged directly with us.
These figures are derived from the three numbers, not entered by hand: it is the same arithmetic as the size equivalence calculator.
Usable mounting width is a shop 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.
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 |
|---|---|---|---|
| 255/55R20Original size | 788.5 mm | 0 %Identical diameter | — |
| 255/50R21 | 788.4 mm | -0.01 %Within tolerance | — |
| 255/60R19 | 788.6 mm | +0.01 %Within tolerance | — |
| 255/45R22 | 788.3 mm | -0.03 %Within tolerance | — |
| 255/65R18 | 788.7 mm | +0.03 %Within tolerance | — |
| 235/65R19 | 788.1 mm | -0.05 %Within tolerance | — |
| 275/60R18 | 787.2 mm | -0.16 %Within tolerance | — |
| 285/45R21 | 789.9 mm | +0.18 %Within tolerance | — |
| 235/60R20 | 790 mm | +0.19 %Within tolerance | — |
| 285/40R22 | 786.8 mm | -0.22 %Within tolerance | — |
| 235/70R18 | 786.2 mm | -0.29 %Within tolerance | — |
| 235/55R21 | 791.9 mm | +0.43 %Within tolerance | — |
| 275/55R19 | 785.1 mm | -0.43 %Within tolerance | — |
| 285/50R20 | 793 mm | +0.57 %Within tolerance | — |
| 225/50R22 | 783.8 mm | -0.6 %Within tolerance | — |
| 235/50R22 | 793.8 mm | +0.67 %Within tolerance | — |
| 275/45R21 | 780.9 mm | -0.96 %Within tolerance | In the catalogue |
| 265/65R18 | 801.7 mm | +1.67 %Within tolerance | In the catalogue |
| 265/60R18 | 775.2 mm | -1.69 %Within tolerance | In the catalogue |
| 265/50R20 | 773 mm | -1.97 %Within tolerance | In the catalogue |
| 235/55R20 | 766.5 mm | -2.79 %For reference only | In the catalogue |
| 275/55R20 | 810.5 mm | +2.79 %For reference only | In the catalogue |
Every size, every brand and every season has its own page: the models offered, the technical sheet and the equivalents.