Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/35r16 vs 265/70r16 Tire Comparison Side By Side
  245/35-16 265/70-16 Difference
Diameter inches (mm) 22.75 (577.9) 30.61 (777.4) 7.85 (199.5) 34.5%
Width inches (mm) 9.65 (245) 10.43 (265) 0.79 (20) 8.2%
Circum. inches (mm) 71.48 (1815.53) 96.15 (2442.27) 24.68 (626.75) 34.5%
Sidewall Height inches (mm) 3.38 (85.75) 7.3 (185.5) 3.93 (99.75) 116.3%
Revolutions per mile (km) 886.43 (550.8) 658.95 (409.45) -227.48 (-141.35) -25.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)26.9 mph (43.3 km/h)
25 mph (40.23 km/h)33.63 mph (54.12 km/h)
30 mph (48.28 km/h)40.36 mph (64.95 km/h)
35 mph (56.33 km/h)47.08 mph (75.77 km/h)
40 mph (64.37 km/h)53.81 mph (86.6 km/h)
45 mph (72.42 km/h)60.53 mph (97.42 km/h)
50 mph (80.47 km/h)67.26 mph (108.25 km/h)
55 mph (88.51 km/h)73.99 mph (119.07 km/h)
60 mph (96.56 km/h)80.71 mph (129.9 km/h)
65 mph (104.61 km/h)87.44 mph (140.72 km/h)
70 mph (112.65 km/h)94.17 mph (151.54 km/h)
75 mph (120.7 km/h)100.89 mph (162.37 km/h)
80 mph (128.75 km/h)107.62 mph (173.19 km/h)
85 mph (136.79 km/h)114.34 mph (184.02 km/h)
90 mph (144.84 km/h)121.07 mph (194.84 km/h)
95 mph (152.89 km/h)127.8 mph (205.67 km/h)
100 mph (160.93 km/h)134.52 mph (216.49 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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