Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/60r16 vs 245/70r16 Tire Comparison Side By Side
  265/60-16 245/70-16 Difference
Diameter inches (mm) 28.52 (724.4) 29.5 (749.4) 0.98 (25) 3.5%
Width inches (mm) 10.43 (265) 9.65 (245) -0.79 (-20) -7.5%
Circum. inches (mm) 89.6 (2275.77) 92.69 (2354.31) 3.09 (78.54) 3.5%
Sidewall Height inches (mm) 6.26 (159) 6.75 (171.5) 0.49 (12.5) 7.9%
Revolutions per mile (km) 707.16 (439.41) 683.57 (424.75) -23.59 (-14.66) -3.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.69 mph (33.3 km/h)
25 mph (40.23 km/h)25.86 mph (41.62 km/h)
30 mph (48.28 km/h)31.04 mph (49.95 km/h)
35 mph (56.33 km/h)36.21 mph (58.27 km/h)
40 mph (64.37 km/h)41.38 mph (66.6 km/h)
45 mph (72.42 km/h)46.55 mph (74.92 km/h)
50 mph (80.47 km/h)51.73 mph (83.24 km/h)
55 mph (88.51 km/h)56.9 mph (91.57 km/h)
60 mph (96.56 km/h)62.07 mph (99.89 km/h)
65 mph (104.61 km/h)67.24 mph (108.22 km/h)
70 mph (112.65 km/h)72.42 mph (116.54 km/h)
75 mph (120.7 km/h)77.59 mph (124.87 km/h)
80 mph (128.75 km/h)82.76 mph (133.19 km/h)
85 mph (136.79 km/h)87.93 mph (141.52 km/h)
90 mph (144.84 km/h)93.11 mph (149.84 km/h)
95 mph (152.89 km/h)98.28 mph (158.16 km/h)
100 mph (160.93 km/h)103.45 mph (166.49 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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