Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 135/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 24.91 (632.7) | -0.53 (-13.5) -2.1% |
| Width inches (mm) | 5.31 (135) | 5.31 (135) | 0 (0) 0% |
| Circum. inches (mm) | 79.93 (2030.1) | 78.26 (1987.69) | -1.67 (-42.41) -2.1% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 3.45 (87.75) | -0.27 (-6.75) -7.1% |
| Revolutions per mile (km) | 792.74 (492.59) | 809.66 (503.1) | 16.91 (10.51) 2.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.58 mph (31.51 km/h) |
| 25 mph (40.23 km/h) | 24.48 mph (39.39 km/h) |
| 30 mph (48.28 km/h) | 29.37 mph (47.27 km/h) |
| 35 mph (56.33 km/h) | 34.27 mph (55.15 km/h) |
| 40 mph (64.37 km/h) | 39.16 mph (63.03 km/h) |
| 45 mph (72.42 km/h) | 44.06 mph (70.91 km/h) |
| 50 mph (80.47 km/h) | 48.96 mph (78.79 km/h) |
| 55 mph (88.51 km/h) | 53.85 mph (86.66 km/h) |
| 60 mph (96.56 km/h) | 58.75 mph (94.54 km/h) |
| 65 mph (104.61 km/h) | 63.64 mph (102.42 km/h) |
| 70 mph (112.65 km/h) | 68.54 mph (110.3 km/h) |
| 75 mph (120.7 km/h) | 73.43 mph (118.18 km/h) |
| 80 mph (128.75 km/h) | 78.33 mph (126.06 km/h) |
| 85 mph (136.79 km/h) | 83.22 mph (133.94 km/h) |
| 90 mph (144.84 km/h) | 88.12 mph (141.82 km/h) |
| 95 mph (152.89 km/h) | 93.02 mph (149.69 km/h) |
| 100 mph (160.93 km/h) | 97.91 mph (157.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2060 | 2394 | 2578 | 2692 | 2814 | 2902 | 2999 | 3113 | 3270 | 3428 | 3604 | 3744 | 3998 | 4279 | 4498 | 4638 | 4717 | 5006 | 5410 | 6286 |
Better Fuel Economy Factory Ratios Increased Power
