183Best 345/30 R20 tires
1 rated tire 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.
28.1″
overall diameter
13.6″
section width
20″
rim diameter
716.5
revs per mile
Best 345/30 R20 summer tires
1183Conversion
345/30 R20 in inches
| Overall diameter | 28.1″ |
| Section width | 13.6″ |
| Rim diameter | 20″ |
| Sidewall height | 104 mm |
| Circumference | 88.4″ |
| Revolutions per mile | 716.5 |
The closest flotation size is 33x13.50R20 — 17.2% taller and 0.6% narrower. Compare them in the calculator.
Wheels
What rims fit 345/30 R20 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 20″ — only the width varies. Estimated from the 13.6″ section width (70–90% rule).
Fitted from the factory on rims: 20x12.5.
Sidewall
345/30 R20 — 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. |
| 30 | The second number is the aspect ratio: sidewall height as a percentage of width. At 30%, the sidewall is about 104 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. |