Best 195/50 R18 tires
We don't have rated tires listed in this size yet — the conversion, rim fitment and comparisons below still apply.
25.7″
overall diameter
7.7″
section width
18″
rim diameter
785.4
revs per mile
Conversion
195/50 R18 in inches
| Overall diameter | 25.7″ |
| Section width | 7.7″ |
| Rim diameter | 18″ |
| Sidewall height | 98 mm |
| Circumference | 80.7″ |
| Revolutions per mile | 785.4 |
The closest flotation size is 28x12.00R18 — 9% taller and 56.3% wider. Compare them in the calculator.
Wheels
What rims fit 195/50 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
195/50 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. |
| 50 | The second number is the aspect ratio: sidewall height as a percentage of width. At 50%, the sidewall is about 98 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. |