Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/65r16 vs 215/75r16 Tire Comparison Side By Side
  215/65-16 215/75-16 Difference
Diameter inches (mm) 27 (685.9) 28.7 (728.9) 1.69 (43) 6.3%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 84.84 (2154.82) 90.15 (2289.91) 5.32 (135.09) 6.3%
Sidewall Height inches (mm) 5.5 (139.75) 6.35 (161.25) 0.85 (21.5) 15.4%
Revolutions per mile (km) 746.86 (464.08) 702.8 (436.7) -44.06 (-27.38) -5.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.25 mph (34.2 km/h)
25 mph (40.23 km/h)26.57 mph (42.76 km/h)
30 mph (48.28 km/h)31.88 mph (51.31 km/h)
35 mph (56.33 km/h)37.19 mph (59.86 km/h)
40 mph (64.37 km/h)42.51 mph (68.41 km/h)
45 mph (72.42 km/h)47.82 mph (76.96 km/h)
50 mph (80.47 km/h)53.13 mph (85.51 km/h)
55 mph (88.51 km/h)58.45 mph (94.06 km/h)
60 mph (96.56 km/h)63.76 mph (102.61 km/h)
65 mph (104.61 km/h)69.07 mph (111.17 km/h)
70 mph (112.65 km/h)74.39 mph (119.72 km/h)
75 mph (120.7 km/h)79.7 mph (128.27 km/h)
80 mph (128.75 km/h)85.02 mph (136.82 km/h)
85 mph (136.79 km/h)90.33 mph (145.37 km/h)
90 mph (144.84 km/h)95.64 mph (153.92 km/h)
95 mph (152.89 km/h)100.96 mph (162.47 km/h)
100 mph (160.93 km/h)106.27 mph (171.02 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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