Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/35-18 | 305/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.51 (698.7) | 26.41 (670.7) | -1.1 (-28) -4% |
| Width inches (mm) | 13.58 (345) | 12.01 (305) | -1.57 (-40) -11.6% |
| Circum. inches (mm) | 86.42 (2195.03) | 82.96 (2107.07) | -3.46 (-87.96) -4% |
| Sidewall Height inches (mm) | 4.75 (120.75) | 4.2 (106.75) | -0.55 (-14) -11.6% |
| Revolutions per mile (km) | 733.18 (455.57) | 763.78 (474.59) | 30.61 (19.02) 4.2% |
305/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.2 mph (30.9 km/h) |
| 25 mph (40.23 km/h) | 24 mph (38.62 km/h) |
| 30 mph (48.28 km/h) | 28.8 mph (46.35 km/h) |
| 35 mph (56.33 km/h) | 33.6 mph (54.07 km/h) |
| 40 mph (64.37 km/h) | 38.4 mph (61.79 km/h) |
| 45 mph (72.42 km/h) | 43.2 mph (69.52 km/h) |
| 50 mph (80.47 km/h) | 48 mph (77.24 km/h) |
| 55 mph (88.51 km/h) | 52.8 mph (84.97 km/h) |
| 60 mph (96.56 km/h) | 57.6 mph (92.69 km/h) |
| 65 mph (104.61 km/h) | 62.4 mph (100.42 km/h) |
| 70 mph (112.65 km/h) | 67.19 mph (108.14 km/h) |
| 75 mph (120.7 km/h) | 71.99 mph (115.86 km/h) |
| 80 mph (128.75 km/h) | 76.79 mph (123.59 km/h) |
| 85 mph (136.79 km/h) | 81.59 mph (131.31 km/h) |
| 90 mph (144.84 km/h) | 86.39 mph (139.04 km/h) |
| 95 mph (152.89 km/h) | 91.19 mph (146.76 km/h) |
| 100 mph (160.93 km/h) | 95.99 mph (154.49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1944 | 2258 | 2432 | 2539 | 2655 | 2738 | 2829 | 2936 | 3085 | 3234 | 3399 | 3532 | 3772 | 4036 | 4243 | 4375 | 4450 | 4723 | 5103 | 5930 |
Better Fuel Economy Factory Ratios Increased Power
