183Best 325/30 R20 tires
5 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Michelin Pilot Sport Cup 2 at 83/100.
27.7″
overall diameter
12.8″
section width
20″
rim diameter
728.7
revs per mile
Best 325/30 R20 summer tires
4183
275
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474More top-rated 325/30 R20 tires
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Conversion
325/30 R20 in inches
| Overall diameter | 27.7″ |
| Section width | 12.8″ |
| Rim diameter | 20″ |
| Sidewall height | 98 mm |
| Circumference | 87″ |
| Revolutions per mile | 728.7 |
The closest flotation size is 33x12.50R20 — 19.2% taller and 2.3% narrower. Compare them in the calculator.
Wheels
What rims fit 325/30 R20 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 20″ — only the width varies. Estimated from the 12.8″ section width (70–90% rule).
Fitted from the factory on rims: 20x11.5, 20x12.
Sidewall
325/30 R20 — 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. |
| 30 | The second number is the aspect ratio: sidewall height as a percentage of width. At 30%, the sidewall is about 98 mm tall. |
| R20 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 20-inch wheel. |