Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/75r17 vs 235/85r16 Tire Comparison Side By Side
  215/75-17 235/85-16 Difference
Diameter inches (mm) 29.7 (754.3) 31.73 (805.9) 2.03 (51.6) 6.8%
Width inches (mm) 8.46 (215) 9.25 (235) 0.79 (20) 9.3%
Circum. inches (mm) 93.3 (2369.7) 99.68 (2531.81) 6.38 (162.11) 6.8%
Sidewall Height inches (mm) 6.35 (161.25) 7.86 (199.75) 1.52 (38.5) 23.9%
Revolutions per mile (km) 679.13 (421.99) 635.65 (394.97) -43.48 (-27.02) -6.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.37 mph (34.39 km/h)
25 mph (40.23 km/h)26.71 mph (42.99 km/h)
30 mph (48.28 km/h)32.05 mph (51.58 km/h)
35 mph (56.33 km/h)37.39 mph (60.18 km/h)
40 mph (64.37 km/h)42.74 mph (68.78 km/h)
45 mph (72.42 km/h)48.08 mph (77.37 km/h)
50 mph (80.47 km/h)53.42 mph (85.97 km/h)
55 mph (88.51 km/h)58.76 mph (94.57 km/h)
60 mph (96.56 km/h)64.1 mph (103.17 km/h)
65 mph (104.61 km/h)69.45 mph (111.76 km/h)
70 mph (112.65 km/h)74.79 mph (120.36 km/h)
75 mph (120.7 km/h)80.13 mph (128.96 km/h)
80 mph (128.75 km/h)85.47 mph (137.56 km/h)
85 mph (136.79 km/h)90.81 mph (146.15 km/h)
90 mph (144.84 km/h)96.16 mph (154.75 km/h)
95 mph (152.89 km/h)101.5 mph (163.35 km/h)
100 mph (160.93 km/h)106.84 mph (171.94 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
16181879202421132210227823542444256826912829293931393359353136413703393042474935
Better Fuel Economy Factory Ratios Increased Power

Most Popular 215/75-R17 Comparisons

To Top