Best 195/55 R18 tires
We don't have rated tires listed in this size yet — the conversion, rim fitment and comparisons below still apply.
26.4″
overall diameter
7.7″
section width
18″
rim diameter
762.6
revs per mile
Conversion
195/55 R18 in inches
| Overall diameter | 26.4″ |
| Section width | 7.7″ |
| Rim diameter | 18″ |
| Sidewall height | 107 mm |
| Circumference | 83.1″ |
| Revolutions per mile | 762.6 |
The closest flotation size is 28x12.00R18 — 5.9% taller and 56.3% wider. Compare them in the calculator.
Wheels
What rims fit 195/55 R18 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
5.5″
Ideal
6″
Maximum
7″
Rim diameter is fixed at 18″ — only the width varies. Estimated from the 7.7″ section width (70–90% rule).
Fitted from the factory on rims: 18x6.5.
Sidewall
195/55 R18 — what does it mean?
| Parameter | Meaning |
|---|---|
| 195 | The first number is the section width — 195 mm, or about 7.7 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 107 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. |