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Old 06-29-2013, 01:22 PM   #1
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Can someone please explain this to me?

Size Backside Offset Bolt Circle Bore

17x9 5 1/2 +12 5-5.0, 5-4.5 81.5

17x9 5 1/2 +12 5-5.0, 5-4.5 87

What does all this crap mean??
Someone please explain backside, offset, bolt circle and bore to me!!

What does the 9 mean after the size? I understand 17" rim but what about the 9? I have seen other rims 17x8. I don't understand offset or bore either. I am also a little lost on the bolt circle. I know I need a 5 bolt rim but what does the 5.0 and 4.5 mean after that?

I want to make sure I order the correct wheels.

Thanks in advance!!

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Old 06-29-2013, 04:25 PM   #2
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See if this helps, I think it's from discount tire. you said you need 5 bolt, but there is a bunch of 5 bolt patterns, bore should be center hole in rim. this bump it to the top and maybe get you more replys







Example Wheel Size: 16x7 4-100 40S

16
Wheel Diameter: The size of the wheel as measured across its center.
7
Wheel Width: The width of the wheel as measured across its barrel from the front rim to the rear rim.
4-100
Bolt Pattern: The bolt pattern indicates the arrangement of lug holes and consists of two elements: the number of bolts, or lugs (4 in this case), and the distance between them across the center of the wheel (100mm in our example). For more detailed information, visit our Bolt Pattern page.
40
Offset: The offset of a wheel is what locates the tire and wheel assembly in relation to the suspension. More specifically, it is the measured distance between the hub mounting surface and the centerline of the rim.

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Old 06-29-2013, 07:30 PM   #3
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This might help a little!
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2013 JKU True Blue, 4" Zone Lift, 35x12.5x17 Nitto Trail Grapplers, ION 171 Black and Machined Wheels
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Old 07-05-2013, 10:13 AM   #4
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Just so I understand things. Offset is the relation of where the rim attached to the hub in relation to the center of the rim? So a 0 (zero) offset is dead in the middle of the rim, a +12 puts it further inside the rim (thereby sticking the rim further away from the Jeep?) and a -10 puts the rim further under the Jeep?

I have a '06 Rubi with the 16" rims and stock Wranglers. PO's used it as a Pavement Princess. I'm looking for a second set of rims to put on a set tires for off-roading. Was thinking of 17" or 18" x 10"wide. If my thinking is right (maybe?), but the larger the rolling mass, the easier to get over things, tho more effort to do so).

Thanks,

Butch
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