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Circle Track Wheel Rate Chart

Wheel Rates in Lbs per Inch

Arm Length in Inches

Dia.Solid [in]Actual Dia.Tubular [in]J [in4]12 in.12.5 in.13 in.13.5 in.14 in.14.5 in.15 in.15.5 in.16 in.16.5 in.17 in.17.5 in.18 in.18.5 in.
0.8500.9570.0513162.6149.9138.6128.5119.5111.4104.197.591.686.181.176.572.468.5
0.8750.9750.0577182.8168.5155.8144.5134.4125.3117.1109.7102.996.891.286.181.377.0
0.9000.9930.0644204.1188.2174.0161.4150.1139.9130.8122.5114.9108.1101.896.190.886.0
0.9251.0120.0719228.0210.1194.3180.2167.6156.3146.0136.8128.4120.7113.7107.3101.596.1
0.9501.0310.0799253.2233.4215.8200.2186.1173.5162.2151.9142.6134.1126.3119.2112.7106.7
0.9751.0510.0887281.3259.3239.8222.4206.8192.8180.2168.8158.4148.9140.3132.4125.2118.5
1.0001.0710.0981311.0286.7265.1245.9228.7213.2199.2186.6175.1164.7155.2146.4138.4131.0
1.0251.0920.1085344.1317.2293.3272.0253.0235.9220.4206.4193.8182.2171.7162.0153.1145.0
1.0501.1130.1196379.2349.5323.2299.7278.7259.9242.9227.5213.5200.8189.1178.5168.7159.7
1.0651.1230.1251396.6365.5338.0313.5291.5271.8254.0237.9223.3210.0197.8186.7176.5167.1

For more information on the math and our universal torsion bar calculator, check out our torsion bar wheel rate calculator.

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