Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/65-18 | 276/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.07 (814.7) | 31.04 (788.4) | -1.04 (-26.3) -3.2% |
| Width inches (mm) | 10.83 (275) | 10.87 (276) | 0.04 (1) 0.4% |
| Circum. inches (mm) | 100.77 (2559.46) | 97.51 (2476.83) | -3.25 (-82.62) -3.2% |
| Sidewall Height inches (mm) | 7.04 (178.75) | 6.52 (165.6) | -0.52 (-13.15) -7.4% |
| Revolutions per mile (km) | 628.78 (390.71) | 649.76 (403.74) | 20.98 (13.03) 3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.35 mph (31.15 km/h) |
| 25 mph (40.23 km/h) | 24.19 mph (38.93 km/h) |
| 30 mph (48.28 km/h) | 29.03 mph (46.72 km/h) |
| 35 mph (56.33 km/h) | 33.87 mph (54.51 km/h) |
| 40 mph (64.37 km/h) | 38.71 mph (62.3 km/h) |
| 45 mph (72.42 km/h) | 43.55 mph (70.08 km/h) |
| 50 mph (80.47 km/h) | 48.39 mph (77.87 km/h) |
| 55 mph (88.51 km/h) | 53.22 mph (85.66 km/h) |
| 60 mph (96.56 km/h) | 58.06 mph (93.44 km/h) |
| 65 mph (104.61 km/h) | 62.9 mph (101.23 km/h) |
| 70 mph (112.65 km/h) | 67.74 mph (109.02 km/h) |
| 75 mph (120.7 km/h) | 72.58 mph (116.8 km/h) |
| 80 mph (128.75 km/h) | 77.42 mph (124.59 km/h) |
| 85 mph (136.79 km/h) | 82.26 mph (132.38 km/h) |
| 90 mph (144.84 km/h) | 87.09 mph (140.17 km/h) |
| 95 mph (152.89 km/h) | 91.93 mph (147.95 km/h) |
| 100 mph (160.93 km/h) | 96.77 mph (155.74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1654 | 1921 | 2069 | 2160 | 2259 | 2329 | 2406 | 2498 | 2625 | 2751 | 2892 | 3004 | 3209 | 3434 | 3610 | 3722 | 3785 | 4018 | 4341 | 5045 |
Better Fuel Economy Factory Ratios Increased Power
