Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/65-18 | 245/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.03 (762.7) | 30.54 (775.7) | 0.51 (13) 1.7% |
| Width inches (mm) | 9.25 (235) | 9.65 (245) | 0.39 (10) 4.3% |
| Circum. inches (mm) | 94.33 (2396.09) | 95.94 (2436.93) | 1.61 (40.84) 1.7% |
| Sidewall Height inches (mm) | 6.01 (152.75) | 6.27 (159.25) | 0.26 (6.5) 4.3% |
| Revolutions per mile (km) | 671.65 (417.35) | 660.4 (410.35) | -11.26 (-6.99) -1.7% |
245/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.34 mph (32.74 km/h) |
| 25 mph (40.23 km/h) | 25.43 mph (40.92 km/h) |
| 30 mph (48.28 km/h) | 30.51 mph (49.1 km/h) |
| 35 mph (56.33 km/h) | 35.6 mph (57.29 km/h) |
| 40 mph (64.37 km/h) | 40.68 mph (65.47 km/h) |
| 45 mph (72.42 km/h) | 45.77 mph (73.66 km/h) |
| 50 mph (80.47 km/h) | 50.85 mph (81.84 km/h) |
| 55 mph (88.51 km/h) | 55.94 mph (90.02 km/h) |
| 60 mph (96.56 km/h) | 61.02 mph (98.21 km/h) |
| 65 mph (104.61 km/h) | 66.11 mph (106.39 km/h) |
| 70 mph (112.65 km/h) | 71.19 mph (114.57 km/h) |
| 75 mph (120.7 km/h) | 76.28 mph (122.76 km/h) |
| 80 mph (128.75 km/h) | 81.36 mph (130.94 km/h) |
| 85 mph (136.79 km/h) | 86.45 mph (139.13 km/h) |
| 90 mph (144.84 km/h) | 91.53 mph (147.31 km/h) |
| 95 mph (152.89 km/h) | 96.62 mph (155.49 km/h) |
| 100 mph (160.93 km/h) | 101.7 mph (163.68 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1681 | 1952 | 2103 | 2195 | 2296 | 2367 | 2446 | 2539 | 2667 | 2796 | 2939 | 3054 | 3261 | 3490 | 3669 | 3783 | 3847 | 4083 | 4412 | 5128 |
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