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Re: Wheel Lug Base Circle, 5 on 5 Only?
Quote:
Originally Posted by 87chevy.com
If you measure center to center its 4.75.. but thats not the correct way to measure the bolt pattern on a 5x5 pattern. why, dont know. the correct way to measure it is top of the wheel stud to the center of the other... kinda dumb but some genius though of it .... the 6 lug folks measure center to center... normal people... haha. When I redrilled my rear rotors, I should have measured 2x and drilled once.. lol
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It's because you're measuring the diameter of the circle created by the center of all the lugs. You measure the ones opposite each other on an axle with an even number of lugs, because they are directly across from each other. You can't do this on a 5 lug axle because none of the lugs are directly opposite each other. Luckily, if you put a tape measure on the end of one lug and measure to the center of the one that is two lugs away, you will get the correct measurement.
see here for visual reference:
https://www.rsracing.com/tech-wheel.html
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