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Old 09-09-2009, 09:43 PM   #1
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Rim offset and backspace question.. Please help me

ok, im looking to purchase these wheels for my 03 maxima and the wheels im looking at have an offset of 48mm and a backspace of 6.71".. (i dont like the offset i want the wheels to be a little more flush with the fenders wells.) so i found the same wheels same bolt pattern, with a 38mm offset, and a backspace of 6.33''.
my qusetion is whats the "backspace" mean and do you think they will fit on my max? (the 38mm/6.33" backspace) with out any issues
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Old 09-09-2009, 09:55 PM   #2
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Backspacing just means how far the wheel extends inwards from the hub. Less offset will push your wheels out to be more flush with the fender.
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Old 09-09-2009, 10:05 PM   #3
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Just ignore backspace or offset. Use one or the other. Just a different way to measure/communicate wheel specifications.

Personally I'm used to just using wheel width and offset. Refer to the stickies in this section. Measure the amount of protrusion you need to be flush with your stock wheels and chose the appropriate wheel. You can find the stock wheel specs with a search.
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Old 09-09-2009, 10:13 PM   #4
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so do you think the 38mm offset wheels would look good on my 03 max?
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Old 09-09-2009, 10:18 PM   #5
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Originally Posted by ricerocket336 View Post
so do you think the 38mm offset wheels would look good on my 03 max?
If the wheel is 9.5 inches wide, yes.

Read the stickies...?
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Old 09-09-2009, 10:23 PM   #6
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they a 8.5'' wide
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Old 09-09-2009, 11:11 PM   #7
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Originally Posted by Fast1one View Post
Just ignore backspace or offset. Use one or the other. Just a different way to measure/communicate wheel specifications.

Personally I'm used to just using wheel width and offset.
Me too. The funny thing is that backspacing/frontspacing (or whatever they call it, I can't remember) is more immediately informative than offset and width, just nobody uses it.
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Old 09-09-2009, 11:50 PM   #8
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"Backspacing is the distance from the inside bolting surface (Hub mounting pad) of the rim to the outer edge of the inboard side of the rim. To determine backspacing simply lay the wheel face down and lay a straight edge (or board, or anything else that is flat) across the wheel. Use a tape measurer or ruler and measure the distance from the bottom of the straight edge to the hub mounting pad. This is your backspace and when choosing rims can help you determine rim depth in the wheel well."

i also agree that it is MUCH more informative rather than offset and wheel width.

Last edited by MrDicks95SE; 09-09-2009 at 11:52 PM.
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Old 09-10-2009, 06:55 PM   #9
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Originally Posted by MorpheusZero View Post
Me too. The funny thing is that backspacing/frontspacing (or whatever they call it, I can't remember) is more immediately informative than offset and width, just nobody uses it.
Lol I know. For some reason its so much easier to compare rim to rim with offset

For example, if I have an 8 inch wheel that is perfectly flush and want to go wider, calculating the required offset just feels more intuitive. Must be habit

As far as for 8.5 inch wide wheel. It would be ok. I would shoot for something like +30 all around personally. Spacer in the rear to match or camber in fronts and go lower offset like +25. That's pretty conservative still.

I'm running 9 +24 all around in my 4th gen. But that requires stretched tires.
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Old 09-12-2009, 11:55 AM   #10
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Quote:
Originally Posted by Fast1one View Post
Lol I know. For some reason its so much easier to compare rim to rim with offset

For example, if I have an 8 inch wheel that is perfectly flush and want to go wider, calculating the required offset just feels more intuitive. Must be habit

As far as for 8.5 inch wide wheel. It would be ok. I would shoot for something like +30 all around personally. Spacer in the rear to match or camber in fronts and go lower offset like +25. That's pretty conservative still.

I'm running 9 +24 all around in my 4th gen. But that requires stretched tires.
but only slightly stretched. running 235s on my 9.0JJ et+25 with clearance all around. but those will soon be gone
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Old 09-12-2009, 11:16 PM   #11
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but only slightly stretched. running 235s on my 9.0JJ et+25 with clearance all around. but those will soon be gone
Yeah, slightly stretched to OUR standards
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Old 09-13-2009, 09:38 AM   #12
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but only slightly stretched. running 235s on my 9.0JJ et+25 with clearance all around. but those will soon be gone
hmm, so 17x8 +25mm would work fine on a 4th gen? wouldn't it stick out slightly?
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Old 09-13-2009, 06:40 PM   #13
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Originally Posted by DAVE Sz View Post
hmm, so 17x8 +25mm would work fine on a 4th gen? wouldn't it stick out slightly?
no it will stick 13mm in towards the car.
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Old 09-13-2009, 08:44 PM   #14
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Originally Posted by DAVE Sz View Post
hmm, so 17x8 +25mm would work fine on a 4th gen? wouldn't it stick out slightly?
That size will be fine for most normal enthusiasts
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Old 09-14-2009, 10:49 AM   #15
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no it will stick 13mm in towards the car.
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Originally Posted by Fast1one View Post
That size will be fine for most normal enthusiasts
as long as it doesn't stick out, I can live with 13mm...

SSRs here I come...
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Old 09-14-2009, 11:45 AM   #16
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Originally Posted by DAVE Sz View Post
as long as it doesn't stick out, I can live with 13mm...

SSRs here I come...
If you have zero camber up front it will stick out roughly 5mm. -1 degree will be perfect flush. Rear will be sunk 10mm or so.

You will not notice 5mm though. Will look flush
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Old 09-14-2009, 01:19 PM   #17
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Quote:
Originally Posted by Fast1one View Post
If you have zero camber up front it will stick out roughly 5mm. -1 degree will be perfect flush. Rear will be sunk 10mm or so.

You will not notice 5mm though. Will look flush
sunken rears FTL. throw a 15mm spacer in the rear.
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Old 09-14-2009, 02:28 PM   #18
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sunken rears FTL. throw a 15mm spacer in the rear.
Depends on the tire. I was thinking 10mm with rolled fenders.
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Old 09-14-2009, 03:46 PM   #19
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Quote:
Originally Posted by Fast1one View Post
If you have zero camber up front it will stick out roughly 5mm. -1 degree will be perfect flush. Rear will be sunk 10mm or so.

You will not notice 5mm though. Will look flush
-1.5 up front....
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Old 09-14-2009, 04:07 PM   #20
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Originally Posted by DAVE Sz View Post
-1.5 up front....
8" +25 it is then

I would go wider, but at least you are going relatively flush. Keeping it fresh.
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Old 09-15-2009, 02:31 AM   #21
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Quote:
Originally Posted by Fast1one View Post
Depends on the tire. I was thinking 10mm with rolled fenders.
15mm with rolled fenders. tire or not. do a fender pull if it still rubs. make it work. done deal.
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Old 09-15-2009, 02:32 AM   #22
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Quote:
Originally Posted by Fast1one View Post
8" +25 it is then

I would go wider, but at least you are going relatively flush. Keeping it fresh.
werd. keep it flush.
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