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 275/35r18 Tire Comparison Side By Side
  295/35-18 275/35-18 Difference
Diameter inches (mm) 26.13 (663.7) 25.58 (649.7) -0.55 (-14) -2.1%
Width inches (mm) 11.61 (295) 10.83 (275) -0.79 (-20) -6.8%
Circum. inches (mm) 82.09 (2085.08) 80.36 (2041.09) -1.73 (-43.98) -2.1%
Sidewall Height inches (mm) 4.06 (103.25) 3.79 (96.25) -0.28 (-7) -6.8%
Revolutions per mile (km) 771.84 (479.6) 788.47 (489.93) 16.63 (10.33) 2.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.58 mph (31.51 km/h)
25 mph (40.23 km/h)24.47 mph (39.38 km/h)
30 mph (48.28 km/h)29.37 mph (47.26 km/h)
35 mph (56.33 km/h)34.26 mph (55.14 km/h)
40 mph (64.37 km/h)39.16 mph (63.02 km/h)
45 mph (72.42 km/h)44.05 mph (70.89 km/h)
50 mph (80.47 km/h)48.95 mph (78.77 km/h)
55 mph (88.51 km/h)53.84 mph (86.65 km/h)
60 mph (96.56 km/h)58.73 mph (94.52 km/h)
65 mph (104.61 km/h)63.63 mph (102.4 km/h)
70 mph (112.65 km/h)68.52 mph (110.28 km/h)
75 mph (120.7 km/h)73.42 mph (118.15 km/h)
80 mph (128.75 km/h)78.31 mph (126.03 km/h)
85 mph (136.79 km/h)83.21 mph (133.91 km/h)
90 mph (144.84 km/h)88.1 mph (141.79 km/h)
95 mph (152.89 km/h)93 mph (149.66 km/h)
100 mph (160.93 km/h)97.89 mph (157.54 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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