Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/40r19 vs 215/60r19 Tire Comparison Side By Side
  215/40-19 215/60-19 Difference
Diameter inches (mm) 25.77 (654.6) 29.16 (740.6) 3.39 (86) 13.1%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 80.96 (2056.49) 91.6 (2326.66) 10.64 (270.18) 13.1%
Sidewall Height inches (mm) 3.39 (86) 5.08 (129) 1.69 (43) 50%
Revolutions per mile (km) 782.57 (486.27) 691.7 (429.8) -90.87 (-56.47) -11.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.63 mph (36.42 km/h)
25 mph (40.23 km/h)28.28 mph (45.52 km/h)
30 mph (48.28 km/h)33.94 mph (54.62 km/h)
35 mph (56.33 km/h)39.6 mph (63.73 km/h)
40 mph (64.37 km/h)45.26 mph (72.83 km/h)
45 mph (72.42 km/h)50.91 mph (81.94 km/h)
50 mph (80.47 km/h)56.57 mph (91.04 km/h)
55 mph (88.51 km/h)62.23 mph (100.14 km/h)
60 mph (96.56 km/h)67.88 mph (109.25 km/h)
65 mph (104.61 km/h)73.54 mph (118.35 km/h)
70 mph (112.65 km/h)79.2 mph (127.45 km/h)
75 mph (120.7 km/h)84.85 mph (136.56 km/h)
80 mph (128.75 km/h)90.51 mph (145.66 km/h)
85 mph (136.79 km/h)96.17 mph (154.77 km/h)
90 mph (144.84 km/h)101.82 mph (163.87 km/h)
95 mph (152.89 km/h)107.48 mph (172.97 km/h)
100 mph (160.93 km/h)113.14 mph (182.08 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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