Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/35-18 | 315/30-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.13 (663.7) | 25.44 (646.2) | -0.69 (-17.5) -2.6% |
| Width inches (mm) | 11.61 (295) | 12.4 (315) | 0.79 (20) 6.8% |
| Circum. inches (mm) | 82.09 (2085.08) | 79.93 (2030.1) | -2.16 (-54.98) -2.6% |
| Sidewall Height inches (mm) | 4.06 (103.25) | 3.72 (94.5) | -0.34 (-8.75) -8.5% |
| Revolutions per mile (km) | 771.84 (479.6) | 792.74 (492.59) | 20.9 (12.99) 2.7% |
315/30-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.47 mph (31.34 km/h) |
| 25 mph (40.23 km/h) | 24.34 mph (39.17 km/h) |
| 30 mph (48.28 km/h) | 29.21 mph (47.01 km/h) |
| 35 mph (56.33 km/h) | 34.08 mph (54.84 km/h) |
| 40 mph (64.37 km/h) | 38.95 mph (62.68 km/h) |
| 45 mph (72.42 km/h) | 43.81 mph (70.51 km/h) |
| 50 mph (80.47 km/h) | 48.68 mph (78.35 km/h) |
| 55 mph (88.51 km/h) | 53.55 mph (86.18 km/h) |
| 60 mph (96.56 km/h) | 58.42 mph (94.01 km/h) |
| 65 mph (104.61 km/h) | 63.29 mph (101.85 km/h) |
| 70 mph (112.65 km/h) | 68.15 mph (109.68 km/h) |
| 75 mph (120.7 km/h) | 73.02 mph (117.52 km/h) |
| 80 mph (128.75 km/h) | 77.89 mph (125.35 km/h) |
| 85 mph (136.79 km/h) | 82.76 mph (133.19 km/h) |
| 90 mph (144.84 km/h) | 87.63 mph (141.02 km/h) |
| 95 mph (152.89 km/h) | 92.5 mph (148.86 km/h) |
| 100 mph (160.93 km/h) | 97.36 mph (156.69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | 2344 | 2524 | 2635 | 2756 | 2841 | 2936 | 3048 | 3202 | 3357 | 3528 | 3666 | 3915 | 4189 | 4404 | 4541 | 4619 | 4902 | 5297 | 6155 |
Better Fuel Economy Factory Ratios Increased Power
