Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/35-21 | 285/40-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.13 (739.9) | 29.98 (761.4) | 0.85 (21.5) 2.9% |
| Width inches (mm) | 11.61 (295) | 11.22 (285) | -0.39 (-10) -3.4% |
| Circum. inches (mm) | 91.51 (2324.46) | 94.17 (2392.01) | 2.66 (67.54) 2.9% |
| Sidewall Height inches (mm) | 4.06 (103.25) | 4.49 (114) | 0.42 (10.75) 10.4% |
| Revolutions per mile (km) | 692.35 (430.21) | 672.8 (418.06) | -19.55 (-12.15) -2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.58 mph (33.12 km/h) |
| 25 mph (40.23 km/h) | 25.73 mph (41.4 km/h) |
| 30 mph (48.28 km/h) | 30.87 mph (49.68 km/h) |
| 35 mph (56.33 km/h) | 36.02 mph (57.96 km/h) |
| 40 mph (64.37 km/h) | 41.16 mph (66.24 km/h) |
| 45 mph (72.42 km/h) | 46.31 mph (74.53 km/h) |
| 50 mph (80.47 km/h) | 51.45 mph (82.81 km/h) |
| 55 mph (88.51 km/h) | 56.6 mph (91.09 km/h) |
| 60 mph (96.56 km/h) | 61.74 mph (99.37 km/h) |
| 65 mph (104.61 km/h) | 66.89 mph (107.65 km/h) |
| 70 mph (112.65 km/h) | 72.03 mph (115.93 km/h) |
| 75 mph (120.7 km/h) | 77.18 mph (124.21 km/h) |
| 80 mph (128.75 km/h) | 82.32 mph (132.49 km/h) |
| 85 mph (136.79 km/h) | 87.47 mph (140.77 km/h) |
| 90 mph (144.84 km/h) | 92.62 mph (149.05 km/h) |
| 95 mph (152.89 km/h) | 97.76 mph (157.33 km/h) |
| 100 mph (160.93 km/h) | 102.91 mph (165.61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1712 | 1989 | 2142 | 2237 | 2339 | 2412 | 2492 | 2586 | 2718 | 2849 | 2994 | 3111 | 3322 | 3555 | 3738 | 3854 | 3920 | 4160 | 4495 | 5224 |
Better Fuel Economy Factory Ratios Increased Power
