Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-15 | 155/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.42 (569.5) | 24.76 (629) | 2.34 (59.5) 10.4% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 70.44 (1789.14) | 77.8 (1976.06) | 7.36 (186.92) 10.4% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 4.88 (124) | 1.17 (29.75) 31.6% |
| Revolutions per mile (km) | 899.51 (558.93) | 814.42 (506.06) | -85.09 (-52.87) -9.5% |
155/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.09 mph (35.55 km/h) |
| 25 mph (40.23 km/h) | 27.61 mph (44.44 km/h) |
| 30 mph (48.28 km/h) | 33.13 mph (53.32 km/h) |
| 35 mph (56.33 km/h) | 38.66 mph (62.21 km/h) |
| 40 mph (64.37 km/h) | 44.18 mph (71.1 km/h) |
| 45 mph (72.42 km/h) | 49.7 mph (79.99 km/h) |
| 50 mph (80.47 km/h) | 55.22 mph (88.87 km/h) |
| 55 mph (88.51 km/h) | 60.75 mph (97.76 km/h) |
| 60 mph (96.56 km/h) | 66.27 mph (106.65 km/h) |
| 65 mph (104.61 km/h) | 71.79 mph (115.54 km/h) |
| 70 mph (112.65 km/h) | 77.31 mph (124.42 km/h) |
| 75 mph (120.7 km/h) | 82.84 mph (133.31 km/h) |
| 80 mph (128.75 km/h) | 88.36 mph (142.2 km/h) |
| 85 mph (136.79 km/h) | 93.88 mph (151.09 km/h) |
| 90 mph (144.84 km/h) | 99.4 mph (159.97 km/h) |
| 95 mph (152.89 km/h) | 104.93 mph (168.86 km/h) |
| 100 mph (160.93 km/h) | 110.45 mph (177.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2073 | 2408 | 2593 | 2708 | 2831 | 2919 | 3016 | 3131 | 3290 | 3448 | 3625 | 3766 | 4022 | 4304 | 4524 | 4665 | 4745 | 5036 | 5442 | 6323 |
Better Fuel Economy Factory Ratios Increased Power
