Mike "Wuzzy121". Rest in peace, brother

Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/82r15 vs 165/75r15 Tire Comparison Side By Side
  165/82-15 165/75-15 Difference
Diameter inches (mm) 25.65 (651.6) 24.74 (628.5) -0.91 (-23.1) -3.5%
Width inches (mm) 6.5 (165) 6.5 (165) 0 (0) 0%
Circum. inches (mm) 80.59 (2047.06) 77.74 (1974.49) -2.86 (-72.57) -3.5%
Sidewall Height inches (mm) 5.33 (135.3) 4.87 (123.75) -0.45 (-11.55) -8.5%
Revolutions per mile (km) 786.17 (488.5) 815.07 (506.46) 28.9 (17.95) 3.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.29 mph (31.05 km/h)
25 mph (40.23 km/h)24.11 mph (38.81 km/h)
30 mph (48.28 km/h)28.94 mph (46.57 km/h)
35 mph (56.33 km/h)33.76 mph (54.33 km/h)
40 mph (64.37 km/h)38.58 mph (62.09 km/h)
45 mph (72.42 km/h)43.4 mph (69.85 km/h)
50 mph (80.47 km/h)48.23 mph (77.61 km/h)
55 mph (88.51 km/h)53.05 mph (85.38 km/h)
60 mph (96.56 km/h)57.87 mph (93.14 km/h)
65 mph (104.61 km/h)62.7 mph (100.9 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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