Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
235/50r17 vs 225/55r17 Tire Comparison Side By Side
  235/50-17 225/55-17 Difference
Diameter inches (mm) 26.25 (666.8) 26.74 (679.3) 0.49 (12.5) 1.9%
Width inches (mm) 9.25 (235) 8.86 (225) -0.39 (-10) -4.3%
Circum. inches (mm) 82.47 (2094.81) 84.02 (2134.08) 1.55 (39.27) 1.9%
Sidewall Height inches (mm) 4.63 (117.5) 4.87 (123.75) 0.25 (6.25) 5.3%
Revolutions per mile (km) 768.25 (477.37) 754.11 (468.58) -14.14 (-8.78) -1.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.37 mph (32.79 km/h)
25 mph (40.23 km/h)25.47 mph (40.99 km/h)
30 mph (48.28 km/h)30.56 mph (49.19 km/h)
35 mph (56.33 km/h)35.66 mph (57.38 km/h)
40 mph (64.37 km/h)40.75 mph (65.58 km/h)
45 mph (72.42 km/h)45.84 mph (73.78 km/h)
50 mph (80.47 km/h)50.94 mph (81.98 km/h)
55 mph (88.51 km/h)56.03 mph (90.17 km/h)
60 mph (96.56 km/h)61.12 mph (98.37 km/h)
65 mph (104.61 km/h)66.22 mph (106.57 km/h)
70 mph (112.65 km/h)71.31 mph (114.77 km/h)
75 mph (120.7 km/h)76.41 mph (122.96 km/h)
80 mph (128.75 km/h)81.5 mph (131.16 km/h)
85 mph (136.79 km/h)86.59 mph (139.36 km/h)
90 mph (144.84 km/h)91.69 mph (147.56 km/h)
95 mph (152.89 km/h)96.78 mph (155.75 km/h)
100 mph (160.93 km/h)101.87 mph (163.95 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
19192229240125072621270327932899304631933356348737243985418943204393466350395855
Better Fuel Economy Factory Ratios Increased Power

Most Popular 235/50-R17 Comparisons

To Top