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 295/35r15 Tire Comparison Side By Side
  295/45-15 295/35-15 Difference
Diameter inches (mm) 25.45 (646.5) 23.13 (587.5) -2.32 (-59) -9.1%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 79.96 (2031.04) 72.66 (1845.69) -7.3 (-185.35) -9.1%
Sidewall Height inches (mm) 5.23 (132.75) 4.06 (103.25) -1.16 (-29.5) -22.2%
Revolutions per mile (km) 792.37 (492.36) 871.95 (541.8) 79.57 (49.45) 10%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.17 mph (29.25 km/h)
25 mph (40.23 km/h)22.72 mph (36.56 km/h)
30 mph (48.28 km/h)27.26 mph (43.87 km/h)
35 mph (56.33 km/h)31.81 mph (51.19 km/h)
40 mph (64.37 km/h)36.35 mph (58.5 km/h)
45 mph (72.42 km/h)40.89 mph (65.81 km/h)
50 mph (80.47 km/h)45.44 mph (73.12 km/h)
55 mph (88.51 km/h)49.98 mph (80.44 km/h)
60 mph (96.56 km/h)54.52 mph (87.75 km/h)
65 mph (104.61 km/h)59.07 mph (95.06 km/h)
70 mph (112.65 km/h)63.61 mph (102.37 km/h)
75 mph (120.7 km/h)68.16 mph (109.69 km/h)
80 mph (128.75 km/h)72.7 mph (117 km/h)
85 mph (136.79 km/h)77.24 mph (124.31 km/h)
90 mph (144.84 km/h)81.79 mph (131.62 km/h)
95 mph (152.89 km/h)86.33 mph (138.94 km/h)
100 mph (160.93 km/h)90.87 mph (146.25 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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