Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/35r24 vs 325/45r24 Tire Comparison Side By Side
  295/35-24 325/45-24 Difference
Diameter inches (mm) 32.13 (816.1) 35.52 (902.1) 3.39 (86) 10.5%
Width inches (mm) 11.61 (295) 12.8 (325) 1.18 (30) 10.2%
Circum. inches (mm) 100.94 (2563.85) 111.58 (2834.03) 10.64 (270.18) 10.5%
Sidewall Height inches (mm) 4.06 (103.25) 5.76 (146.25) 1.69 (43) 41.6%
Revolutions per mile (km) 627.71 (390.04) 567.86 (352.85) -59.84 (-37.18) -9.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.11 mph (35.58 km/h)
25 mph (40.23 km/h)27.63 mph (44.47 km/h)
30 mph (48.28 km/h)33.16 mph (53.37 km/h)
35 mph (56.33 km/h)38.69 mph (62.26 km/h)
40 mph (64.37 km/h)44.22 mph (71.16 km/h)
45 mph (72.42 km/h)49.74 mph (80.05 km/h)
50 mph (80.47 km/h)55.27 mph (88.95 km/h)
55 mph (88.51 km/h)60.8 mph (97.84 km/h)
60 mph (96.56 km/h)66.32 mph (106.74 km/h)
65 mph (104.61 km/h)71.85 mph (115.63 km/h)
70 mph (112.65 km/h)77.38 mph (124.53 km/h)
75 mph (120.7 km/h)82.9 mph (133.42 km/h)
80 mph (128.75 km/h)88.43 mph (142.32 km/h)
85 mph (136.79 km/h)93.96 mph (151.21 km/h)
90 mph (144.84 km/h)99.48 mph (160.1 km/h)
95 mph (152.89 km/h)105.01 mph (169 km/h)
100 mph (160.93 km/h)110.54 mph (177.89 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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