Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/70r16 vs 235/70r16 Tire Comparison Side By Side
  265/70-16 235/70-16 Difference
Diameter inches (mm) 30.61 (777.4) 28.95 (735.4) -1.65 (-42) -5.4%
Width inches (mm) 10.43 (265) 9.25 (235) -1.18 (-30) -11.3%
Circum. inches (mm) 96.15 (2442.27) 90.96 (2310.33) -5.19 (-131.95) -5.4%
Sidewall Height inches (mm) 7.3 (185.5) 6.48 (164.5) -0.83 (-21) -11.3%
Revolutions per mile (km) 658.95 (409.45) 696.59 (432.84) 37.63 (23.38) 5.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.92 mph (30.45 km/h)
25 mph (40.23 km/h)23.65 mph (38.06 km/h)
30 mph (48.28 km/h)28.38 mph (45.67 km/h)
35 mph (56.33 km/h)33.11 mph (53.28 km/h)
40 mph (64.37 km/h)37.84 mph (60.9 km/h)
45 mph (72.42 km/h)42.57 mph (68.51 km/h)
50 mph (80.47 km/h)47.3 mph (76.12 km/h)
55 mph (88.51 km/h)52.03 mph (83.73 km/h)
60 mph (96.56 km/h)56.76 mph (91.34 km/h)
65 mph (104.61 km/h)61.49 mph (98.96 km/h)
70 mph (112.65 km/h)66.22 mph (106.57 km/h)
75 mph (120.7 km/h)70.95 mph (114.18 km/h)
80 mph (128.75 km/h)75.68 mph (121.79 km/h)
85 mph (136.79 km/h)80.41 mph (129.4 km/h)
90 mph (144.84 km/h)85.14 mph (137.02 km/h)
95 mph (152.89 km/h)89.87 mph (144.63 km/h)
100 mph (160.93 km/h)94.6 mph (152.24 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
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