193Best 325/65 R18 tires
19 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Falken WildPeak A/T3W at 93/100.
34.6″
overall diameter
12.8″
section width
18″
rim diameter
582.3
revs per mile
Best 325/65 R18 all-terrain tires
15193
293
393
492
593
689
788
886
987
1086
1183
12913 more rated tires in this size are listed on their brand pages.
Best 325/65 R18 mud-terrain tires
2
176
More top-rated 325/65 R18 tires
2
191
296Conversion
325/65 R18 in inches
| Overall diameter | 34.6″ |
| Section width | 12.8″ |
| Rim diameter | 18″ |
| Sidewall height | 211 mm |
| Circumference | 108.8″ |
| Revolutions per mile | 582.3 |
The closest flotation size is 35x13.00R18 — 1.1% taller and 1.6% wider. Compare them in the calculator.
Wheels
What rims fit 325/65 R18 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
9″
Ideal
10″
Maximum
11.5″
Rim diameter is fixed at 18″ — only the width varies. Estimated from the 12.8″ section width (70–90% rule).
Fitted from the factory on rims: 18x9.
Popular comparisons
Sizes often compared with 325/65 R18
Close alternatives — each opens in the tire size calculator.
Sidewall
325/65 R18 — what does it mean?
| Parameter | Meaning |
|---|---|
| 325 | The first number is the section width — 325 mm, or about 12.8 inches across the widest part of the tire. |
| 65 | The second number is the aspect ratio: sidewall height as a percentage of width. At 65%, the sidewall is about 211 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. |