Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/35-19 | 265/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.51 (724.1) | 26.35 (669.2) | -2.16 (-54.9) -7.6% |
| Width inches (mm) | 13.58 (345) | 10.43 (265) | -3.15 (-80) -23.2% |
| Circum. inches (mm) | 89.56 (2274.83) | 82.77 (2102.35) | -6.79 (-172.47) -7.6% |
| Sidewall Height inches (mm) | 4.75 (120.75) | 4.17 (106) | -0.58 (-14.75) -12.2% |
| Revolutions per mile (km) | 707.46 (439.59) | 765.5 (475.66) | 58.04 (36.06) 8.2% |
265/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.48 mph (29.75 km/h) |
| 25 mph (40.23 km/h) | 23.1 mph (37.18 km/h) |
| 30 mph (48.28 km/h) | 27.73 mph (44.62 km/h) |
| 35 mph (56.33 km/h) | 32.35 mph (52.06 km/h) |
| 40 mph (64.37 km/h) | 36.97 mph (59.49 km/h) |
| 45 mph (72.42 km/h) | 41.59 mph (66.93 km/h) |
| 50 mph (80.47 km/h) | 46.21 mph (74.37 km/h) |
| 55 mph (88.51 km/h) | 50.83 mph (81.8 km/h) |
| 60 mph (96.56 km/h) | 55.45 mph (89.24 km/h) |
| 65 mph (104.61 km/h) | 60.07 mph (96.68 km/h) |
| 70 mph (112.65 km/h) | 64.69 mph (104.11 km/h) |
| 75 mph (120.7 km/h) | 69.31 mph (111.55 km/h) |
| 80 mph (128.75 km/h) | 73.93 mph (118.99 km/h) |
| 85 mph (136.79 km/h) | 78.56 mph (126.42 km/h) |
| 90 mph (144.84 km/h) | 83.18 mph (133.86 km/h) |
| 95 mph (152.89 km/h) | 87.8 mph (141.3 km/h) |
| 100 mph (160.93 km/h) | 92.42 mph (148.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1948 | 2263 | 2437 | 2545 | 2661 | 2744 | 2835 | 2943 | 3092 | 3241 | 3407 | 3540 | 3780 | 4045 | 4253 | 4385 | 4460 | 4733 | 5115 | 5944 |
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