Best 225/40 R16 tires
We don't have rated tires listed in this size yet — the conversion, rim fitment and comparisons below still apply.
23.1″
overall diameter
8.9″
section width
16″
rim diameter
873.6
revs per mile
Conversion
225/40 R16 in inches
| Overall diameter | 23.1″ |
| Section width | 8.9″ |
| Rim diameter | 16″ |
| Sidewall height | 90 mm |
| Circumference | 72.5″ |
| Revolutions per mile | 873.6 |
The closest flotation size is 31x10.50R16 — 34.3% taller and 18.5% wider. Compare them in the calculator.
Wheels
What rims fit 225/40 R16 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
6″
Ideal
7″
Maximum
8″
Rim diameter is fixed at 16″ — only the width varies. Estimated from the 8.9″ section width (70–90% rule).
Fitted from the factory on rims: 16x7.5.
Sidewall
225/40 R16 — what does it mean?
| Parameter | Meaning |
|---|---|
| 225 | The first number is the section width — 225 mm, or about 8.9 inches across the widest part of the tire. |
| 40 | The second number is the aspect ratio: sidewall height as a percentage of width. At 40%, the sidewall is about 90 mm tall. |
| R16 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 16-inch wheel. |