192Best 345/35 R18 tires
1 rated tire available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Hoosier R7 at 92/100.
27.5″
overall diameter
13.6″
section width
18″
rim diameter
733.2
revs per mile
More top-rated 345/35 R18 tires
1192Conversion
345/35 R18 in inches
| Overall diameter | 27.5″ |
| Section width | 13.6″ |
| Rim diameter | 18″ |
| Sidewall height | 121 mm |
| Circumference | 86.4″ |
| Revolutions per mile | 733.2 |
The closest flotation size is 28x12.00R18 — 1.8% taller and 11.7% narrower. Compare them in the calculator.
Wheels
What rims fit 345/35 R18 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
9.5″
Ideal
11″
Maximum
12″
Rim diameter is fixed at 18″ — only the width varies. Estimated from the 13.6″ section width (70–90% rule).
Fitted from the factory on rims: 18x14.
Sidewall
345/35 R18 — what does it mean?
| Parameter | Meaning |
|---|---|
| 345 | The first number is the section width — 345 mm, or about 13.6 inches across the widest part of the tire. |
| 35 | The second number is the aspect ratio: sidewall height as a percentage of width. At 35%, the sidewall is about 121 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. |