Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/45r18 vs 295/50r18 Tire Comparison Side By Side
  295/45-18 295/50-18 Difference
Diameter inches (mm) 28.45 (722.7) 29.61 (752.2) 1.16 (29.5) 4.1%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 89.39 (2270.43) 93.04 (2363.11) 3.65 (92.68) 4.1%
Sidewall Height inches (mm) 5.23 (132.75) 5.81 (147.5) 0.58 (14.75) 11.1%
Revolutions per mile (km) 708.83 (440.44) 681.03 (423.17) -27.8 (-17.27) -3.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.82 mph (33.5 km/h)
25 mph (40.23 km/h)26.02 mph (41.88 km/h)
30 mph (48.28 km/h)31.22 mph (50.25 km/h)
35 mph (56.33 km/h)36.43 mph (58.63 km/h)
40 mph (64.37 km/h)41.63 mph (67 km/h)
45 mph (72.42 km/h)46.84 mph (75.38 km/h)
50 mph (80.47 km/h)52.04 mph (83.75 km/h)
55 mph (88.51 km/h)57.25 mph (92.13 km/h)
60 mph (96.56 km/h)62.45 mph (100.5 km/h)
65 mph (104.61 km/h)67.65 mph (108.88 km/h)
70 mph (112.65 km/h)72.86 mph (117.25 km/h)
75 mph (120.7 km/h)78.06 mph (125.63 km/h)
80 mph (128.75 km/h)83.27 mph (134 km/h)
85 mph (136.79 km/h)88.47 mph (142.38 km/h)
90 mph (144.84 km/h)93.67 mph (150.75 km/h)
95 mph (152.89 km/h)98.88 mph (159.13 km/h)
100 mph (160.93 km/h)104.08 mph (167.5 km/h)

Gear Ratio / RPMs for New Tire (@ 65 mph)
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
17332013216822642367244125222618275128843031314933633599378339013968421145505288
Better Fuel Economy Factory Ratios Increased Power

Most Popular 295/45-R18 Comparisons

To Top