Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-14 | 185/75-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.42 (544.1) | 24.93 (633.1) | 3.5 (89) 16.4% |
| Width inches (mm) | 5.71 (145) | 7.28 (185) | 1.57 (40) 27.6% |
| Circum. inches (mm) | 67.3 (1709.34) | 78.3 (1988.94) | 11.01 (279.6) 16.4% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 5.46 (138.75) | 1.75 (44.5) 47.2% |
| Revolutions per mile (km) | 941.5 (585.02) | 809.15 (502.78) | -132.35 (-82.24) -14.1% |
185/75-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.27 mph (37.45 km/h) |
| 25 mph (40.23 km/h) | 29.09 mph (46.81 km/h) |
| 30 mph (48.28 km/h) | 34.91 mph (56.18 km/h) |
| 35 mph (56.33 km/h) | 40.73 mph (65.54 km/h) |
| 40 mph (64.37 km/h) | 46.54 mph (74.9 km/h) |
| 45 mph (72.42 km/h) | 52.36 mph (84.27 km/h) |
| 50 mph (80.47 km/h) | 58.18 mph (93.63 km/h) |
| 55 mph (88.51 km/h) | 64 mph (102.99 km/h) |
| 60 mph (96.56 km/h) | 69.81 mph (112.36 km/h) |
| 65 mph (104.61 km/h) | 75.63 mph (121.72 km/h) |
| 70 mph (112.65 km/h) | 81.45 mph (131.08 km/h) |
| 75 mph (120.7 km/h) | 87.27 mph (140.44 km/h) |
| 80 mph (128.75 km/h) | 93.09 mph (149.81 km/h) |
| 85 mph (136.79 km/h) | 98.9 mph (159.17 km/h) |
| 90 mph (144.84 km/h) | 104.72 mph (168.53 km/h) |
| 95 mph (152.89 km/h) | 110.54 mph (177.9 km/h) |
| 100 mph (160.93 km/h) | 116.36 mph (187.26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2059 | 2392 | 2576 | 2690 | 2813 | 2900 | 2997 | 3111 | 3268 | 3426 | 3601 | 3741 | 3996 | 4276 | 4495 | 4635 | 4714 | 5003 | 5406 | 6283 |
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