Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/75r16 vs 215/85r16 Tire Comparison Side By Side
  195/75-16 215/85-16 Difference
Diameter inches (mm) 27.52 (698.9) 30.39 (771.9) 2.87 (73) 10.4%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 86.44 (2195.66) 95.47 (2425) 9.03 (229.34) 10.4%
Sidewall Height inches (mm) 5.76 (146.25) 7.19 (182.75) 1.44 (36.5) 25%
Revolutions per mile (km) 732.97 (455.44) 663.65 (412.37) -69.32 (-43.07) -9.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.09 mph (35.55 km/h)
25 mph (40.23 km/h)27.61 mph (44.44 km/h)
30 mph (48.28 km/h)33.13 mph (53.32 km/h)
35 mph (56.33 km/h)38.66 mph (62.21 km/h)
40 mph (64.37 km/h)44.18 mph (71.1 km/h)
45 mph (72.42 km/h)49.7 mph (79.98 km/h)
50 mph (80.47 km/h)55.22 mph (88.87 km/h)
55 mph (88.51 km/h)60.74 mph (97.76 km/h)
60 mph (96.56 km/h)66.27 mph (106.65 km/h)
65 mph (104.61 km/h)71.79 mph (115.53 km/h)
70 mph (112.65 km/h)77.31 mph (124.42 km/h)
75 mph (120.7 km/h)82.83 mph (133.31 km/h)
80 mph (128.75 km/h)88.36 mph (142.2 km/h)
85 mph (136.79 km/h)93.88 mph (151.08 km/h)
90 mph (144.84 km/h)99.4 mph (159.97 km/h)
95 mph (152.89 km/h)104.92 mph (168.86 km/h)
100 mph (160.93 km/h)110.44 mph (177.74 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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