Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/80-17 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.39 (695.8) | 29.1 (739.2) | 1.71 (43.4) 6.2% |
| Width inches (mm) | 6.5 (165) | 9.25 (235) | 2.76 (70) 42.4% |
| Circum. inches (mm) | 86.06 (2185.92) | 91.43 (2322.27) | 5.37 (136.35) 6.2% |
| Sidewall Height inches (mm) | 5.2 (132) | 5.55 (141) | 0.35 (9) 6.8% |
| Revolutions per mile (km) | 736.23 (457.47) | 693.01 (430.61) | -43.23 (-26.86) -5.9% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.25 mph (34.19 km/h) |
| 25 mph (40.23 km/h) | 26.56 mph (42.74 km/h) |
| 30 mph (48.28 km/h) | 31.87 mph (51.29 km/h) |
| 35 mph (56.33 km/h) | 37.18 mph (59.84 km/h) |
| 40 mph (64.37 km/h) | 42.49 mph (68.39 km/h) |
| 45 mph (72.42 km/h) | 47.81 mph (76.94 km/h) |
| 50 mph (80.47 km/h) | 53.12 mph (85.49 km/h) |
| 55 mph (88.51 km/h) | 58.43 mph (94.04 km/h) |
| 60 mph (96.56 km/h) | 63.74 mph (102.58 km/h) |
| 65 mph (104.61 km/h) | 69.05 mph (111.13 km/h) |
| 70 mph (112.65 km/h) | 74.37 mph (119.68 km/h) |
| 75 mph (120.7 km/h) | 79.68 mph (128.23 km/h) |
| 80 mph (128.75 km/h) | 84.99 mph (136.78 km/h) |
| 85 mph (136.79 km/h) | 90.3 mph (145.33 km/h) |
| 90 mph (144.84 km/h) | 95.61 mph (153.88 km/h) |
| 95 mph (152.89 km/h) | 100.93 mph (162.42 km/h) |
| 100 mph (160.93 km/h) | 106.24 mph (170.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1764 | 2049 | 2206 | 2304 | 2409 | 2484 | 2567 | 2664 | 2799 | 2934 | 3084 | 3204 | 3422 | 3662 | 3850 | 3970 | 4037 | 4285 | 4630 | 5381 |
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