295/65R20 tire size in inches and millimeters
295/65R20 measures 35.10 inches in overall diameter, 11.61 inches in section width, with a 7.55 inch sidewall.
Every dimension
| Size | In inches | In millimetres |
|---|---|---|
| Overall diameter | 35.10 in | 891.5 mm |
| Section width | 11.61 in | 295 mm |
| Sidewall height | 7.55 in | 191.8 mm |
| Circumference | 110.26 in | 2,800.7 mm |
| Revolutions per mile | 574.6 per mile | 357.0 per km |
Sizes that fit the same wheel
These sizes share a 20 inch wheel diameter and sit within 3% of 295/65R20 in overall diameter, which is the range a swap stays inside without recalibrating anything.
The percentage difference in overall diameter is the speedometer error: a tire 2% taller makes an indicated 60 mph a true 61.2 mph. They are the same number, so it is shown once.
| Alternate size | Overall diameter | Difference (in) | Difference (%) | Width difference (in) |
|---|---|---|---|---|
| 225/85R20 | 35.06 | -0.04 | -0.11 | -2.76 |
| 255/75R20 | 35.06 | -0.04 | -0.11 | -1.57 |
| 275/70R20 | 35.16 | 0.06 | 0.17 | -0.79 |
| 345/55R20 | 34.94 | -0.16 | -0.45 | 1.97 |
| 315/60R20 | 34.88 | -0.22 | -0.62 | 0.79 |
| 325/60R20 | 35.35 | 0.26 | 0.73 | 1.18 |
| 355/55R20 | 35.37 | 0.28 | 0.79 | 2.36 |
| 235/80R20 | 34.80 | -0.30 | -0.84 | -2.36 |
| 245/80R20 | 35.43 | 0.33 | 0.95 | -1.97 |
| 265/70R20 | 34.61 | -0.49 | -1.40 | -1.18 |
| 285/65R20 | 34.59 | -0.51 | -1.46 | -0.39 |
| 305/65R20 | 35.61 | 0.51 | 1.46 | 0.39 |
| 265/75R20 | 35.65 | 0.55 | 1.57 | -1.18 |
| 335/55R20 | 34.51 | -0.59 | -1.68 | 1.57 |
| 285/70R20 | 35.71 | 0.61 | 1.74 | -0.39 |
| 235/85R20 | 35.73 | 0.63 | 1.79 | -2.36 |
| 245/75R20 | 34.47 | -0.63 | -1.79 | -1.97 |
| 305/60R20 | 34.41 | -0.69 | -1.96 | 0.39 |
| 215/85R20 | 34.39 | -0.71 | -2.02 | -3.15 |
| 335/60R20 | 35.83 | 0.73 | 2.08 | 1.57 |
| 225/80R20 | 34.17 | -0.93 | -2.64 | -2.76 |
| 255/80R20 | 36.06 | 0.96 | 2.75 | -1.57 |
| 275/65R20 | 34.07 | -1.02 | -2.92 | -0.79 |
| 315/65R20 | 36.12 | 1.02 | 2.92 | 0.79 |
| 325/55R20 | 34.07 | -1.02 | -2.92 | 1.18 |
| 255/70R20 | 34.06 | -1.04 | -2.97 | -1.57 |
How this is worked out
sidewall height in millimetres = section width × aspect ratio ÷ 100
overall diameter in inches = wheel diameter + (section width × aspect ratio × 2) ÷ 2540
section width in inches = section width in millimetres ÷ 25.4
circumference in inches = π × overall diameter
revolutions per mile = 63360 ÷ circumference in inches
The divisor is 2540, not the 2550 some converters publish. Two sidewalls in inches are 2 × width × aspect ÷ (100 × 25.4), and the rounding costs about 0.07 inches at 34 inches.
For 295/65R20: the sidewall is 191.8 millimetres, two of them are 15.10 inches, and adding the 20 inch wheel gives 35.10 inches overall.
Questions
What size is 295/65R20 in inches?
35.10 inches in overall diameter, 11.61 inches in section width, with a 7.55 inch sidewall.
How tall is a 295/65R20 tire?
35.10 inches, which is 891.5 millimetres.
What do the numbers in 295/65R20 mean?
295 is the section width in millimetres, 65 is the sidewall height as a percentage of that width, and 20 is the wheel diameter in inches. Overall diameter is the wheel diameter plus two sidewalls: 35.10 inches.
Does 295/65R20 fit a 20-inch wheel?
Yes — the 20 in a metric tire size *is* the wheel diameter, so 295/65R20 is made for a 20 inch wheel. Rim width is a separate question the sidewall code does not answer.
What tire sizes are equivalent to 295/65R20?
225/85R20, 255/75R20, 275/70R20 are the closest by overall diameter, all on the same 20 inch wheel.
Fitting a size is not only a matter of diameter. Rim width, load rating, speed rating and clearance all decide whether a size works on a given vehicle, and none of them can be read off the sidewall code alone.