Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
345/35r15 vs 295/35r15 Tire Comparison Side By Side
  345/35-15 295/35-15 Difference
Diameter inches (mm) 24.51 (622.5) 23.13 (587.5) -1.38 (-35) -5.6%
Width inches (mm) 13.58 (345) 11.61 (295) -1.97 (-50) -14.5%
Circum. inches (mm) 76.99 (1955.64) 72.66 (1845.69) -4.33 (-109.96) -5.6%
Sidewall Height inches (mm) 4.75 (120.75) 4.06 (103.25) -0.69 (-17.5) -14.5%
Revolutions per mile (km) 822.92 (511.34) 871.95 (541.8) 49.03 (30.46) 6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.88 mph (30.38 km/h)
25 mph (40.23 km/h)23.59 mph (37.97 km/h)
30 mph (48.28 km/h)28.31 mph (45.57 km/h)
35 mph (56.33 km/h)33.03 mph (53.16 km/h)
40 mph (64.37 km/h)37.75 mph (60.75 km/h)
45 mph (72.42 km/h)42.47 mph (68.35 km/h)
50 mph (80.47 km/h)47.19 mph (75.94 km/h)
55 mph (88.51 km/h)51.91 mph (83.54 km/h)
60 mph (96.56 km/h)56.63 mph (91.13 km/h)
65 mph (104.61 km/h)61.35 mph (98.73 km/h)
70 mph (112.65 km/h)66.06 mph (106.32 km/h)
75 mph (120.7 km/h)70.78 mph (113.91 km/h)
80 mph (128.75 km/h)75.5 mph (121.51 km/h)
85 mph (136.79 km/h)80.22 mph (129.1 km/h)
90 mph (144.84 km/h)84.94 mph (136.7 km/h)
95 mph (152.89 km/h)89.66 mph (144.29 km/h)
100 mph (160.93 km/h)94.38 mph (151.89 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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