Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 235/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 28.88 (733.5) | -8.56 (-217.5) -22.9% |
| Width inches (mm) | 12.4 (315) | 9.25 (235) | -3.15 (-80) -25.4% |
| Circum. inches (mm) | 117.62 (2987.65) | 90.72 (2304.36) | -26.9 (-683.3) -22.9% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 6.94 (176.25) | 3.22 (81.75) 86.5% |
| Revolutions per mile (km) | 538.66 (334.71) | 698.39 (433.96) | 159.73 (99.25) 29.7% |
235/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 15.43 mph (24.83 km/h) |
| 25 mph (40.23 km/h) | 19.28 mph (31.03 km/h) |
| 30 mph (48.28 km/h) | 23.14 mph (37.24 km/h) |
| 35 mph (56.33 km/h) | 27 mph (43.44 km/h) |
| 40 mph (64.37 km/h) | 30.85 mph (49.65 km/h) |
| 45 mph (72.42 km/h) | 34.71 mph (55.86 km/h) |
| 50 mph (80.47 km/h) | 38.56 mph (62.06 km/h) |
| 55 mph (88.51 km/h) | 42.42 mph (68.27 km/h) |
| 60 mph (96.56 km/h) | 46.28 mph (74.48 km/h) |
| 65 mph (104.61 km/h) | 50.13 mph (80.68 km/h) |
| 70 mph (112.65 km/h) | 53.99 mph (86.89 km/h) |
| 75 mph (120.7 km/h) | 57.85 mph (93.1 km/h) |
| 80 mph (128.75 km/h) | 61.7 mph (99.3 km/h) |
| 85 mph (136.79 km/h) | 65.56 mph (105.51 km/h) |
| 90 mph (144.84 km/h) | 69.42 mph (111.72 km/h) |
| 95 mph (152.89 km/h) | 73.27 mph (117.92 km/h) |
| 100 mph (160.93 km/h) | 77.13 mph (124.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1777 | 2065 | 2223 | 2322 | 2428 | 2503 | 2586 | 2685 | 2821 | 2957 | 3108 | 3229 | 3449 | 3691 | 3880 | 4001 | 4069 | 4318 | 4666 | 5423 |
Better Fuel Economy Factory Ratios Increased Power
