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Choosing the right rim..

747mopar

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Since there's always a million "will these fit" threads regarding rims and tires I'll do my best to show how's it's done.

Just to clear up what the dimension look like here's a set of 18x9's with 5" of backspacing.
As you can see 9" in width is measured from inside to inside, typically a 9" rim will measure 10" total.
IMG_20201224_142723018.jpg
IMG_20201224_143200902_HDR.jpg


Same is true with the diameter.
IMG_20201224_142751120.jpg
IMG_20201224_142743455.jpg

Backspacing on the other hand is pretty straight forward as you can see, it's the measurement from the rim mounting pad to the BACK of the rim.
IMG_20201224_142830348.jpg


Knowing what will fit any given vehicle is almost as easy, using a straight edge hold it tight to the drum/rotor then measure your maximum opening in both directions.. in this case 6 1/2" in and 6" out for a total of 12 1/2". When checking for fitment up front it's a bit trickier, you'll need to confirm measurements in several areas as the steering is turned through it's range.
IMG_20201224_143007473.jpg


In this case I chose 9" wide rims with 5" backspacing, should be a near perfect fit comfortably filling the fenders with plenty of clearance.

To me the trickiest part is the tires with so many variables that alter the look. Sites like this really help. On this particular truck the tires looked like balloons, using programs like this you can dial in the width, diameter, sidewall, etc.

Screenshot_20201216-063547.png

Screenshot_20201216-063531.png
 
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Yeah, I never understood why people can't take the time, jack up their car, remove there current wheels, bust out the straight edge and tape measure and figure out all there wheel specs on their own. All cars are slightly different. Either from factory or because of non-original parts swapped out over the years.
 
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Yeah, I never understood why people can't take the time, jack up their car, remove there current wheels, bust out the straight edge and tape measure and figure out all there wheel specs on their own. All cars are slightly different. Either from factory or because of non-original parts swapped out over the years.
Agreed, that's why I put this out there. Some may have never taken the time to understand, maybe just showing the simplicity in doing so may encourage some to give it a try.
 
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