Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/45r15 vs 32/10r15 Tire Comparison Side By Side
  295/45-15 32/10-15 Difference
Diameter inches (mm) 25.45 (646.5) 32 (812.8) 6.55 (166.3) 25.7%
Width inches (mm) 11.61 (295) 10 (254) -1.61 (-41) -13.9%
Circum. inches (mm) 79.96 (2031.04) 100.53 (2553.49) 20.57 (522.45) 25.7%
Sidewall Height inches (mm) 5.23 (132.75) 8.5 (215.9) 3.27 (83.15) 62.6%
Revolutions per mile (km) 792.37 (492.36) 630.25 (391.62) -162.12 (-100.74) -20.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)25.14 mph (40.47 km/h)
25 mph (40.23 km/h)31.43 mph (50.58 km/h)
30 mph (48.28 km/h)37.72 mph (60.7 km/h)
35 mph (56.33 km/h)44 mph (70.82 km/h)
40 mph (64.37 km/h)50.29 mph (80.93 km/h)
45 mph (72.42 km/h)56.58 mph (91.05 km/h)
50 mph (80.47 km/h)62.86 mph (101.17 km/h)
55 mph (88.51 km/h)69.15 mph (111.28 km/h)
60 mph (96.56 km/h)75.43 mph (121.4 km/h)
65 mph (104.61 km/h)81.72 mph (131.52 km/h)
70 mph (112.65 km/h)88.01 mph (141.63 km/h)
75 mph (120.7 km/h)94.29 mph (151.75 km/h)
80 mph (128.75 km/h)100.58 mph (161.87 km/h)
85 mph (136.79 km/h)106.86 mph (171.98 km/h)
90 mph (144.84 km/h)113.15 mph (182.1 km/h)
95 mph (152.89 km/h)119.44 mph (192.22 km/h)
100 mph (160.93 km/h)125.72 mph (202.33 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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