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ZDan · 02-08-2018, 01:18 PM

I'm pretty sure the reported/standard measurement in units of length is at the tire tread, not the wheel.

25" tire OD, 1/8" (0.125") toe-in conversion to degrees = (0.125"/25")*180°/pi = 0.29°

If you measured at the wheel, 1/8" (0.125") toe would equate to (0.125"/17")*180°/pi = 0.42°, that's a big difference!

02-08-2018, 01:18 PM	#3
ZDan Senior Member Join Date: May 2011 Drives: '23 BRZ Location: Providence, RI Posts: 4,672 Thanks: 1,439 Thanked 4,011 Times in 2,097 Posts Mentioned: 85 Post(s) Tagged: 0 Thread(s)	I'm pretty sure the reported/standard measurement in units of length is at the tire tread, not the wheel. 25" tire OD, 1/8" (0.125") toe-in conversion to degrees = (0.125"/25")180°/pi = 0.29° If you measured at the wheel, 1/8" (0.125") toe would equate to (0.125"/17")180°/pi = 0.42°, that's a big difference!