193Best 215/55 R18 tires
64 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Goodyear Assurance Maxlife2 at 92/100.
27.3″
overall diameter
8.5″
section width
18″
rim diameter
738.5
revs per mile
Best 215/55 R18 all-season tires
26193
289
388
488
590
683
794
887
987
1083
1180
129214 more rated tires in this size are listed on their brand pages.
More top-rated 215/55 R18 tires
17
192
293
388
493
590
688
786
887
993
1188
12825 more rated tires in this size are listed on their brand pages.
Best 215/55 R18 summer tires
14
190
283
387
481
583
675
775
866
973
1070
1169
12622 more rated tires in this size are listed on their brand pages.
Best 215/55 R18 winter tires
6
192
278
381
480
576
674Best 215/55 R18 all-terrain tires
1
189Conversion
215/55 R18 in inches
| Overall diameter | 27.3″ |
| Section width | 8.5″ |
| Rim diameter | 18″ |
| Sidewall height | 118 mm |
| Circumference | 85.8″ |
| Revolutions per mile | 738.5 |
The closest flotation size is 28x12.00R18 — 2.5% taller and 41.8% wider. Compare them in the calculator.
Wheels
What rims fit 215/55 R18 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
6″
Ideal
7″
Maximum
7.5″
Rim diameter is fixed at 18″ — only the width varies. Estimated from the 8.5″ section width (70–90% rule).
Fitted from the factory on rims: 18x6.5, 18x7, 18x7.5, 18x8.
Popular comparisons
Sizes often compared with 215/55 R18
Close alternatives — each opens in the tire size calculator.
Sidewall
215/55 R18 — what does it mean?
| Parameter | Meaning |
|---|---|
| 215 | The first number is the section width — 215 mm, or about 8.5 inches across the widest part of the tire. |
| 55 | The second number is the aspect ratio: sidewall height as a percentage of width. At 55%, the sidewall is about 118 mm tall. |
| R18 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 18-inch wheel. |