191Best 375/55 R20 tires
1 rated tire available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Atturo Trail Blade Boss at 91/100.
36.2″
overall diameter
14.8″
section width
20″
rim diameter
556.5
revs per mile
Best 375/55 R20 all-terrain tires
1191Conversion
375/55 R20 in inches
| Overall diameter | 36.2″ |
| Section width | 14.8″ |
| Rim diameter | 20″ |
| Sidewall height | 206 mm |
| Circumference | 113.9″ |
| Revolutions per mile | 556.5 |
The closest flotation size is 36x15.50R20 — 0.7% shorter and 5% wider. Compare them in the calculator.
Wheels
What rims fit 375/55 R20 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
10.5″
Ideal
12″
Maximum
13.5″
Rim diameter is fixed at 20″ — only the width varies. Estimated from the 14.8″ section width (70–90% rule).
Popular comparisons
Sizes often compared with 375/55 R20
Close alternatives — each opens in the tire size calculator.
Sidewall
375/55 R20 — what does it mean?
| Parameter | Meaning |
|---|---|
| 375 | The first number is the section width — 375 mm, or about 14.8 inches across the widest part of the tire. |
| 55 | The second number is the aspect ratio: sidewall height as a percentage of width. At 55%, the sidewall is about 206 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. |