Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-18 | 26/8-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.54 (674.2) | 25.99 (660.2) | -0.55 (-14) -2.1% |
| Width inches (mm) | 6.1 (155) | 7.99 (203) | 1.89 (48) 31% |
| Circum. inches (mm) | 83.39 (2118.06) | 81.66 (2074.08) | -1.73 (-43.98) -2.1% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4 (101.5) | -0.28 (-7) -6.5% |
| Revolutions per mile (km) | 759.82 (472.13) | 775.93 (482.14) | 16.11 (10.01) 2.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.58 mph (31.52 km/h) |
| 25 mph (40.23 km/h) | 24.48 mph (39.4 km/h) |
| 30 mph (48.28 km/h) | 29.38 mph (47.28 km/h) |
| 35 mph (56.33 km/h) | 34.27 mph (55.16 km/h) |
| 40 mph (64.37 km/h) | 39.17 mph (63.04 km/h) |
| 45 mph (72.42 km/h) | 44.07 mph (70.92 km/h) |
| 50 mph (80.47 km/h) | 48.96 mph (78.8 km/h) |
| 55 mph (88.51 km/h) | 53.86 mph (86.68 km/h) |
| 60 mph (96.56 km/h) | 58.75 mph (94.56 km/h) |
| 65 mph (104.61 km/h) | 63.65 mph (102.44 km/h) |
| 70 mph (112.65 km/h) | 68.55 mph (110.31 km/h) |
| 75 mph (120.7 km/h) | 73.44 mph (118.19 km/h) |
| 80 mph (128.75 km/h) | 78.34 mph (126.07 km/h) |
| 85 mph (136.79 km/h) | 83.23 mph (133.95 km/h) |
| 90 mph (144.84 km/h) | 88.13 mph (141.83 km/h) |
| 95 mph (152.89 km/h) | 93.03 mph (149.71 km/h) |
| 100 mph (160.93 km/h) | 97.92 mph (157.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1975 | 2294 | 2470 | 2580 | 2697 | 2781 | 2874 | 2983 | 3134 | 3285 | 3453 | 3588 | 3832 | 4100 | 4311 | 4445 | 4521 | 4798 | 5184 | 6025 |
Better Fuel Economy Factory Ratios Increased Power
