Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/40-18 | 265/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.24 (717.2) | 26.35 (669.2) | -1.89 (-48) -6.7% |
| Width inches (mm) | 12.8 (325) | 10.43 (265) | -2.36 (-60) -18.5% |
| Circum. inches (mm) | 88.71 (2253.15) | 82.77 (2102.35) | -5.94 (-150.8) -6.7% |
| Sidewall Height inches (mm) | 5.12 (130) | 4.17 (106) | -0.94 (-24) -18.5% |
| Revolutions per mile (km) | 714.26 (443.82) | 765.5 (475.66) | 51.23 (31.83) 7.2% |
265/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.66 mph (30.03 km/h) |
| 25 mph (40.23 km/h) | 23.33 mph (37.54 km/h) |
| 30 mph (48.28 km/h) | 27.99 mph (45.05 km/h) |
| 35 mph (56.33 km/h) | 32.66 mph (52.56 km/h) |
| 40 mph (64.37 km/h) | 37.32 mph (60.07 km/h) |
| 45 mph (72.42 km/h) | 41.99 mph (67.57 km/h) |
| 50 mph (80.47 km/h) | 46.65 mph (75.08 km/h) |
| 55 mph (88.51 km/h) | 51.32 mph (82.59 km/h) |
| 60 mph (96.56 km/h) | 55.98 mph (90.1 km/h) |
| 65 mph (104.61 km/h) | 60.65 mph (97.61 km/h) |
| 70 mph (112.65 km/h) | 65.32 mph (105.11 km/h) |
| 75 mph (120.7 km/h) | 69.98 mph (112.62 km/h) |
| 80 mph (128.75 km/h) | 74.65 mph (120.13 km/h) |
| 85 mph (136.79 km/h) | 79.31 mph (127.64 km/h) |
| 90 mph (144.84 km/h) | 83.98 mph (135.15 km/h) |
| 95 mph (152.89 km/h) | 88.64 mph (142.66 km/h) |
| 100 mph (160.93 km/h) | 93.31 mph (150.16 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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