Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/75r16.5 vs 30/10r16.5 Tire Comparison Side By Side
  245/75-16.5 30/10-16.5 Difference
Diameter inches (mm) 30.97 (786.6) 30.1 (764.54) -0.87 (-22.06) -2.8%
Width inches (mm) 9.65 (245) 10 (254) 0.35 (9) 3.7%
Circum. inches (mm) 97.29 (2471.18) 94.56 (2401.87) -2.73 (-69.3) -2.8%
Sidewall Height inches (mm) 7.23 (183.75) 6.8 (172.72) -0.43 (-11.03) -6%
Revolutions per mile (km) 651.25 (404.66) 670.04 (416.34) 18.79 (11.68) 2.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.44 mph (31.28 km/h)
25 mph (40.23 km/h)24.3 mph (39.11 km/h)
30 mph (48.28 km/h)29.16 mph (46.93 km/h)
35 mph (56.33 km/h)34.02 mph (54.75 km/h)
40 mph (64.37 km/h)38.88 mph (62.57 km/h)
45 mph (72.42 km/h)43.74 mph (70.39 km/h)
50 mph (80.47 km/h)48.6 mph (78.21 km/h)
55 mph (88.51 km/h)53.46 mph (86.03 km/h)
60 mph (96.56 km/h)58.32 mph (93.85 km/h)
65 mph (104.61 km/h)63.18 mph (101.67 km/h)
70 mph (112.65 km/h)68.04 mph (109.49 km/h)
75 mph (120.7 km/h)72.9 mph (117.32 km/h)
80 mph (128.75 km/h)77.76 mph (125.14 km/h)
85 mph (136.79 km/h)82.62 mph (132.96 km/h)
90 mph (144.84 km/h)87.48 mph (140.78 km/h)
95 mph (152.89 km/h)92.34 mph (148.6 km/h)
100 mph (160.93 km/h)97.2 mph (156.42 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
17051981213322282329240224812576270628372982309833093541372238383904414344775202
Better Fuel Economy Factory Ratios Increased Power

Most Popular 245/75-R16.5 Comparisons

To Top