Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/60-21 | 140/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.14 (689.4) | 24.92 (633) | -2.22 (-56.4) -8.2% |
| Width inches (mm) | 5.12 (130) | 5.51 (140) | 0.39 (10) 7.7% |
| Circum. inches (mm) | 85.27 (2165.81) | 78.29 (1988.63) | -6.98 (-177.19) -8.2% |
| Sidewall Height inches (mm) | 3.07 (78) | 4.96 (126) | 1.89 (48) 61.5% |
| Revolutions per mile (km) | 743.07 (461.72) | 809.27 (502.86) | 66.21 (41.14) 8.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.36 mph (29.55 km/h) |
| 25 mph (40.23 km/h) | 22.95 mph (36.94 km/h) |
| 30 mph (48.28 km/h) | 27.55 mph (44.33 km/h) |
| 35 mph (56.33 km/h) | 32.14 mph (51.72 km/h) |
| 40 mph (64.37 km/h) | 36.73 mph (59.11 km/h) |
| 45 mph (72.42 km/h) | 41.32 mph (66.5 km/h) |
| 50 mph (80.47 km/h) | 45.91 mph (73.88 km/h) |
| 55 mph (88.51 km/h) | 50.5 mph (81.27 km/h) |
| 60 mph (96.56 km/h) | 55.09 mph (88.66 km/h) |
| 65 mph (104.61 km/h) | 59.68 mph (96.05 km/h) |
| 70 mph (112.65 km/h) | 64.27 mph (103.44 km/h) |
| 75 mph (120.7 km/h) | 68.86 mph (110.83 km/h) |
| 80 mph (128.75 km/h) | 73.46 mph (118.21 km/h) |
| 85 mph (136.79 km/h) | 78.05 mph (125.6 km/h) |
| 90 mph (144.84 km/h) | 82.64 mph (132.99 km/h) |
| 95 mph (152.89 km/h) | 87.23 mph (140.38 km/h) |
| 100 mph (160.93 km/h) | 91.82 mph (147.77 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 | 2901 | 2997 | 3111 | 3269 | 3427 | 3602 | 3742 | 3996 | 4277 | 4496 | 4636 | 4715 | 5004 | 5407 | 6284 |
Better Fuel Economy Factory Ratios Increased Power
