Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-15 | 125/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.34 (542) | 23.89 (606.8) | 2.55 (64.8) 12% |
| Width inches (mm) | 4.53 (115) | 4.92 (125) | 0.39 (10) 8.7% |
| Circum. inches (mm) | 67.04 (1702.74) | 75.05 (1906.32) | 8.01 (203.58) 12% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 3.44 (87.5) | 0.28 (7) 8.7% |
| Revolutions per mile (km) | 945.15 (587.29) | 844.22 (524.57) | -100.93 (-62.72) -10.7% |
125/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.39 mph (36.04 km/h) |
| 25 mph (40.23 km/h) | 27.99 mph (45.04 km/h) |
| 30 mph (48.28 km/h) | 33.59 mph (54.05 km/h) |
| 35 mph (56.33 km/h) | 39.18 mph (63.06 km/h) |
| 40 mph (64.37 km/h) | 44.78 mph (72.07 km/h) |
| 45 mph (72.42 km/h) | 50.38 mph (81.08 km/h) |
| 50 mph (80.47 km/h) | 55.98 mph (90.09 km/h) |
| 55 mph (88.51 km/h) | 61.58 mph (99.1 km/h) |
| 60 mph (96.56 km/h) | 67.17 mph (108.11 km/h) |
| 65 mph (104.61 km/h) | 72.77 mph (117.11 km/h) |
| 70 mph (112.65 km/h) | 78.37 mph (126.12 km/h) |
| 75 mph (120.7 km/h) | 83.97 mph (135.13 km/h) |
| 80 mph (128.75 km/h) | 89.56 mph (144.14 km/h) |
| 85 mph (136.79 km/h) | 95.16 mph (153.15 km/h) |
| 90 mph (144.84 km/h) | 100.76 mph (162.16 km/h) |
| 95 mph (152.89 km/h) | 106.36 mph (171.17 km/h) |
| 100 mph (160.93 km/h) | 111.96 mph (180.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2148 | 2496 | 2688 | 2807 | 2935 | 3026 | 3127 | 3245 | 3410 | 3575 | 3757 | 3904 | 4169 | 4461 | 4690 | 4836 | 4918 | 5220 | 5641 | 6555 |
Better Fuel Economy Factory Ratios Increased Power
