Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/60r16 vs 215/70r16 Tire Comparison Side By Side
  205/60-16 215/70-16 Difference
Diameter inches (mm) 25.69 (652.4) 27.85 (707.4) 2.17 (55) 8.4%
Width inches (mm) 8.07 (205) 8.46 (215) 0.39 (10) 4.9%
Circum. inches (mm) 80.69 (2049.58) 87.49 (2222.36) 6.8 (172.79) 8.4%
Sidewall Height inches (mm) 4.84 (123) 5.93 (150.5) 1.08 (27.5) 22.4%
Revolutions per mile (km) 785.21 (487.91) 724.16 (449.97) -61.05 (-37.93) -7.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.69 mph (34.9 km/h)
25 mph (40.23 km/h)27.11 mph (43.63 km/h)
30 mph (48.28 km/h)32.53 mph (52.35 km/h)
35 mph (56.33 km/h)37.95 mph (61.08 km/h)
40 mph (64.37 km/h)43.37 mph (69.8 km/h)
45 mph (72.42 km/h)48.79 mph (78.53 km/h)
50 mph (80.47 km/h)54.22 mph (87.25 km/h)
55 mph (88.51 km/h)59.64 mph (95.98 km/h)
60 mph (96.56 km/h)65.06 mph (104.7 km/h)
65 mph (104.61 km/h)70.48 mph (113.43 km/h)
70 mph (112.65 km/h)75.9 mph (122.15 km/h)
75 mph (120.7 km/h)81.32 mph (130.88 km/h)
80 mph (128.75 km/h)86.74 mph (139.6 km/h)
85 mph (136.79 km/h)92.17 mph (148.33 km/h)
90 mph (144.84 km/h)97.59 mph (157.05 km/h)
95 mph (152.89 km/h)103.01 mph (165.78 km/h)
100 mph (160.93 km/h)108.43 mph (174.5 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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