Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/65r15 vs 325/50r15 Tire Comparison Side By Side
  295/65-15 325/50-15 Difference
Diameter inches (mm) 30.1 (764.5) 27.8 (706) -2.3 (-58.5) -7.7%
Width inches (mm) 11.61 (295) 12.8 (325) 1.18 (30) 10.2%
Circum. inches (mm) 94.56 (2401.75) 87.32 (2217.96) -7.24 (-183.78) -7.7%
Sidewall Height inches (mm) 7.55 (191.75) 6.4 (162.5) -1.15 (-29.25) -15.3%
Revolutions per mile (km) 670.07 (416.36) 725.6 (450.86) 55.52 (34.5) 8.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.47 mph (29.72 km/h)
25 mph (40.23 km/h)23.09 mph (37.15 km/h)
30 mph (48.28 km/h)27.7 mph (44.59 km/h)
35 mph (56.33 km/h)32.32 mph (52.02 km/h)
40 mph (64.37 km/h)36.94 mph (59.45 km/h)
45 mph (72.42 km/h)41.56 mph (66.88 km/h)
50 mph (80.47 km/h)46.17 mph (74.31 km/h)
55 mph (88.51 km/h)50.79 mph (81.74 km/h)
60 mph (96.56 km/h)55.41 mph (89.17 km/h)
65 mph (104.61 km/h)60.03 mph (96.6 km/h)
70 mph (112.65 km/h)64.64 mph (104.03 km/h)
75 mph (120.7 km/h)69.26 mph (111.46 km/h)
80 mph (128.75 km/h)73.88 mph (118.9 km/h)
85 mph (136.79 km/h)78.5 mph (126.33 km/h)
90 mph (144.84 km/h)83.11 mph (133.76 km/h)
95 mph (152.89 km/h)87.73 mph (141.19 km/h)
100 mph (160.93 km/h)92.35 mph (148.62 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
18472145231024122522260126872789293130723229335535833834403141574227448748485634
Better Fuel Economy Factory Ratios Increased Power

Most Popular 295/65-R15 Comparisons

To Top