Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/35r18 vs 265/40r17 Tire Comparison Side By Side
  295/35-18 265/40-17 Difference
Diameter inches (mm) 26.13 (663.7) 25.35 (643.8) -0.78 (-19.9) -3%
Width inches (mm) 11.61 (295) 10.43 (265) -1.18 (-30) -10.2%
Circum. inches (mm) 82.09 (2085.08) 79.63 (2022.56) -2.46 (-62.52) -3%
Sidewall Height inches (mm) 4.06 (103.25) 4.17 (106) 0.11 (2.75) 2.7%
Revolutions per mile (km) 771.84 (479.6) 795.7 (494.42) 23.86 (14.82) 3.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.4 mph (31.22 km/h)
25 mph (40.23 km/h)24.25 mph (39.03 km/h)
30 mph (48.28 km/h)29.1 mph (46.83 km/h)
35 mph (56.33 km/h)33.95 mph (54.64 km/h)
40 mph (64.37 km/h)38.8 mph (62.44 km/h)
45 mph (72.42 km/h)43.65 mph (70.25 km/h)
50 mph (80.47 km/h)48.5 mph (78.05 km/h)
55 mph (88.51 km/h)53.35 mph (85.86 km/h)
60 mph (96.56 km/h)58.2 mph (93.67 km/h)
65 mph (104.61 km/h)63.05 mph (101.47 km/h)
70 mph (112.65 km/h)67.9 mph (109.28 km/h)
75 mph (120.7 km/h)72.75 mph (117.08 km/h)
80 mph (128.75 km/h)77.6 mph (124.89 km/h)
85 mph (136.79 km/h)82.45 mph (132.69 km/h)
90 mph (144.84 km/h)87.3 mph (140.5 km/h)
95 mph (152.89 km/h)92.15 mph (148.3 km/h)
100 mph (160.93 km/h)97 mph (156.11 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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