Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 40/12.5-20 | 295/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 40.03 (1016.8) | 36.26 (921) | -3.77 (-95.8) -9.4% |
| Width inches (mm) | 12.52 (318) | 11.61 (295) | -0.91 (-23) -7.2% |
| Circum. inches (mm) | 125.76 (3194.37) | 113.91 (2893.41) | -11.85 (-300.96) -9.4% |
| Sidewall Height inches (mm) | 10.02 (254.4) | 8.13 (206.5) | -1.89 (-47.9) -18.8% |
| Revolutions per mile (km) | 503.81 (313.05) | 556.21 (345.61) | 52.4 (32.56) 10.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.12 mph (29.15 km/h) |
| 25 mph (40.23 km/h) | 22.64 mph (36.44 km/h) |
| 30 mph (48.28 km/h) | 27.17 mph (43.73 km/h) |
| 35 mph (56.33 km/h) | 31.7 mph (51.02 km/h) |
| 40 mph (64.37 km/h) | 36.23 mph (58.31 km/h) |
| 45 mph (72.42 km/h) | 40.76 mph (65.6 km/h) |
| 50 mph (80.47 km/h) | 45.29 mph (72.89 km/h) |
| 55 mph (88.51 km/h) | 49.82 mph (80.17 km/h) |
| 60 mph (96.56 km/h) | 54.35 mph (87.46 km/h) |
| 65 mph (104.61 km/h) | 58.88 mph (94.75 km/h) |
| 70 mph (112.65 km/h) | 63.4 mph (102.04 km/h) |
| 75 mph (120.7 km/h) | 67.93 mph (109.33 km/h) |
| 80 mph (128.75 km/h) | 72.46 mph (116.62 km/h) |
| 85 mph (136.79 km/h) | 76.99 mph (123.91 km/h) |
| 90 mph (144.84 km/h) | 81.52 mph (131.19 km/h) |
| 95 mph (152.89 km/h) | 86.05 mph (138.48 km/h) |
| 100 mph (160.93 km/h) | 90.58 mph (145.77 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1415 | 1644 | 1771 | 1849 | 1933 | 1994 | 2060 | 2138 | 2247 | 2355 | 2476 | 2572 | 2747 | 2939 | 3090 | 3186 | 3240 | 3439 | 3716 | 4319 |
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