Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/70r17 vs 265/65r17 Tire Comparison Side By Side
  195/70-17 265/65-17 Difference
Diameter inches (mm) 27.75 (704.8) 30.56 (776.3) 2.81 (71.5) 10.1%
Width inches (mm) 7.68 (195) 10.43 (265) 2.76 (70) 35.9%
Circum. inches (mm) 87.17 (2214.19) 96.02 (2438.82) 8.84 (224.62) 10.1%
Sidewall Height inches (mm) 5.37 (136.5) 6.78 (172.25) 1.41 (35.75) 26.2%
Revolutions per mile (km) 726.83 (451.63) 659.89 (410.03) -66.94 (-41.6) -9.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.03 mph (35.45 km/h)
25 mph (40.23 km/h)27.54 mph (44.32 km/h)
30 mph (48.28 km/h)33.04 mph (53.18 km/h)
35 mph (56.33 km/h)38.55 mph (62.04 km/h)
40 mph (64.37 km/h)44.06 mph (70.9 km/h)
45 mph (72.42 km/h)49.57 mph (79.77 km/h)
50 mph (80.47 km/h)55.07 mph (88.63 km/h)
55 mph (88.51 km/h)60.58 mph (97.49 km/h)
60 mph (96.56 km/h)66.09 mph (106.36 km/h)
65 mph (104.61 km/h)71.59 mph (115.22 km/h)
70 mph (112.65 km/h)77.1 mph (124.08 km/h)
75 mph (120.7 km/h)82.61 mph (132.95 km/h)
80 mph (128.75 km/h)88.12 mph (141.81 km/h)
85 mph (136.79 km/h)93.62 mph (150.67 km/h)
90 mph (144.84 km/h)99.13 mph (159.53 km/h)
95 mph (152.89 km/h)104.64 mph (168.4 km/h)
100 mph (160.93 km/h)110.14 mph (177.26 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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