Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 260/65-18 | 260/85-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.31 (795.2) | 35.4 (899.2) | 4.09 (104) 13.1% |
| Width inches (mm) | 10.24 (260) | 10.24 (260) | 0 (0) 0% |
| Circum. inches (mm) | 98.35 (2498.19) | 111.22 (2824.92) | 12.86 (326.73) 13.1% |
| Sidewall Height inches (mm) | 6.65 (169) | 8.7 (221) | 2.05 (52) 30.8% |
| Revolutions per mile (km) | 644.2 (400.29) | 569.7 (353.99) | -74.51 (-46.3) -11.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.62 mph (36.4 km/h) |
| 25 mph (40.23 km/h) | 28.27 mph (45.5 km/h) |
| 30 mph (48.28 km/h) | 33.92 mph (54.59 km/h) |
| 35 mph (56.33 km/h) | 39.58 mph (63.69 km/h) |
| 40 mph (64.37 km/h) | 45.23 mph (72.79 km/h) |
| 45 mph (72.42 km/h) | 50.89 mph (81.89 km/h) |
| 50 mph (80.47 km/h) | 56.54 mph (90.99 km/h) |
| 55 mph (88.51 km/h) | 62.19 mph (100.09 km/h) |
| 60 mph (96.56 km/h) | 67.85 mph (109.19 km/h) |
| 65 mph (104.61 km/h) | 73.5 mph (118.29 km/h) |
| 70 mph (112.65 km/h) | 79.15 mph (127.39 km/h) |
| 75 mph (120.7 km/h) | 84.81 mph (136.49 km/h) |
| 80 mph (128.75 km/h) | 90.46 mph (145.59 km/h) |
| 85 mph (136.79 km/h) | 96.12 mph (154.69 km/h) |
| 90 mph (144.84 km/h) | 101.77 mph (163.78 km/h) |
| 95 mph (152.89 km/h) | 107.42 mph (172.88 km/h) |
| 100 mph (160.93 km/h) | 113.08 mph (181.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1450 | 1684 | 1814 | 1894 | 1980 | 2042 | 2110 | 2190 | 2301 | 2412 | 2536 | 2634 | 2813 | 3011 | 3165 | 3264 | 3319 | 3523 | 3806 | 4423 |
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