183Best 265/45 R18 tires
14 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Goodyear Eagle Sport All-Season at 89/100.
27.4″
overall diameter
10.4″
section width
18″
rim diameter
736.3
revs per mile
Best 265/45 R18 summer tires
9183
282
383
479
579
675
768
874
972Best 265/45 R18 all-season tires
3
189
288
364Best 265/45 R18 winter tires
2
179
Conversion
265/45 R18 in inches
| Overall diameter | 27.4″ |
| Section width | 10.4″ |
| Rim diameter | 18″ |
| Sidewall height | 119 mm |
| Circumference | 86″ |
| Revolutions per mile | 736.3 |
The closest flotation size is 28x12.00R18 — 2.2% taller and 15% wider. Compare them in the calculator.
Wheels
What rims fit 265/45 R18 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
7.5″
Ideal
8.5″
Maximum
9.5″
Rim diameter is fixed at 18″ — only the width varies. Estimated from the 10.4″ section width (70–90% rule).
Fitted from the factory on rims: 18x8, 18x8.5, 18x9, 18x9.5.
Popular comparisons
Sizes often compared with 265/45 R18
Close alternatives — each opens in the tire size calculator.
Sidewall
265/45 R18 — what does it mean?
| Parameter | Meaning |
|---|---|
| 265 | The first number is the section width — 265 mm, or about 10.4 inches across the widest part of the tire. |
| 45 | The second number is the aspect ratio: sidewall height as a percentage of width. At 45%, the sidewall is about 119 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. |