Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/35r15 vs 296/65r15 Tire Comparison Side By Side
  295/35-15 296/65-15 Difference
Diameter inches (mm) 23.13 (587.5) 30.15 (765.8) 7.02 (178.3) 30.3%
Width inches (mm) 11.61 (295) 11.65 (296) 0.04 (1) 0.3%
Circum. inches (mm) 72.66 (1845.69) 94.72 (2405.83) 22.05 (560.15) 30.3%
Sidewall Height inches (mm) 4.06 (103.25) 7.57 (192.4) 3.51 (89.15) 86.3%
Revolutions per mile (km) 871.95 (541.8) 668.93 (415.66) -203.01 (-126.15) -23.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)26.07 mph (41.96 km/h)
25 mph (40.23 km/h)32.59 mph (52.44 km/h)
30 mph (48.28 km/h)39.1 mph (62.93 km/h)
35 mph (56.33 km/h)45.62 mph (73.42 km/h)
40 mph (64.37 km/h)52.14 mph (83.91 km/h)
45 mph (72.42 km/h)58.66 mph (94.4 km/h)
50 mph (80.47 km/h)65.17 mph (104.89 km/h)
55 mph (88.51 km/h)71.69 mph (115.38 km/h)
60 mph (96.56 km/h)78.21 mph (125.87 km/h)
65 mph (104.61 km/h)84.73 mph (136.35 km/h)
70 mph (112.65 km/h)91.24 mph (146.84 km/h)
75 mph (120.7 km/h)97.76 mph (157.33 km/h)
80 mph (128.75 km/h)104.28 mph (167.82 km/h)
85 mph (136.79 km/h)110.8 mph (178.31 km/h)
90 mph (144.84 km/h)117.31 mph (188.8 km/h)
95 mph (152.89 km/h)123.83 mph (199.29 km/h)
100 mph (160.93 km/h)130.35 mph (209.78 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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