Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-15 | 155/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.85 (555) | 24.76 (629) | 2.91 (74) 13.3% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 68.65 (1743.58) | 77.8 (1976.06) | 9.15 (232.48) 13.3% |
| Sidewall Height inches (mm) | 3.43 (87) | 4.88 (124) | 1.46 (37) 42.5% |
| Revolutions per mile (km) | 923.01 (573.53) | 814.42 (506.06) | -108.59 (-67.47) -11.8% |
155/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.67 mph (36.48 km/h) |
| 25 mph (40.23 km/h) | 28.33 mph (45.6 km/h) |
| 30 mph (48.28 km/h) | 34 mph (54.72 km/h) |
| 35 mph (56.33 km/h) | 39.67 mph (63.84 km/h) |
| 40 mph (64.37 km/h) | 45.33 mph (72.96 km/h) |
| 45 mph (72.42 km/h) | 51 mph (82.08 km/h) |
| 50 mph (80.47 km/h) | 56.67 mph (91.2 km/h) |
| 55 mph (88.51 km/h) | 62.33 mph (100.32 km/h) |
| 60 mph (96.56 km/h) | 68 mph (109.44 km/h) |
| 65 mph (104.61 km/h) | 73.67 mph (118.56 km/h) |
| 70 mph (112.65 km/h) | 79.33 mph (127.67 km/h) |
| 75 mph (120.7 km/h) | 85 mph (136.79 km/h) |
| 80 mph (128.75 km/h) | 90.67 mph (145.91 km/h) |
| 85 mph (136.79 km/h) | 96.33 mph (155.03 km/h) |
| 90 mph (144.84 km/h) | 102 mph (164.15 km/h) |
| 95 mph (152.89 km/h) | 107.67 mph (173.27 km/h) |
| 100 mph (160.93 km/h) | 113.33 mph (182.39 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
