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Old 09-12-2010, 02:09 PM   #1
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what to do

tires rub on lower control arm let me know
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Old 09-12-2010, 02:11 PM   #2
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get different wheels or buy new tires...idk post a pic and more details such as wheel and tire sizes..offset? bs?
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Old 09-12-2010, 02:30 PM   #3
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like the wheels 17/9 12 mm offset5.4 backspace 285/70/17 the truck only has the rev tec level kit with add a leaf
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Old 09-12-2010, 02:33 PM   #4
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08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed
 
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Hmm 17x9 wheels with 4.5 bs. I think the 4.5 only works for an 8" rim and if you go 9" wide then you need more bs. Someone hopefully will chime in soon to add some input

was that 5.4 or 4.5?

Actually it might be the offset. You start with 4.5 bs then with the offset you lose ~ 1/2" which might be the issue.
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Old 09-12-2010, 02:40 PM   #5
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08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed
 
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This might help lol


under truck l..............l = 9" rim

under truck l........L.....l = 9" rim with 4.5 bs

under truck l......L.......l = 9" rim with 4.5 bs with 12 mm offset

L represents where the lugs attached wheel to the hub
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Old 09-12-2010, 02:48 PM   #6
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my bad it was 4.53 bs
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Old 09-12-2010, 02:50 PM   #7
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08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed
 
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in any case wouldnt change the measurements too much from what i posted above
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Old 09-12-2010, 02:52 PM   #8
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what about spacers?
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Old 09-12-2010, 02:53 PM   #9
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08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed
 
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spacers would help if its rubbing the lca at full turn. another thing to think if its only full lock then i wouldnt worry about it lol
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Old 09-12-2010, 02:53 PM   #10
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going to get good coil overs and uca
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Old 09-12-2010, 02:55 PM   #11
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yea thats what i was thinking the arms are strong wont hurt them, what about grinding them down a bit?
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Old 09-12-2010, 02:55 PM   #12
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08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed
 
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well coilovers arent going to do anything for lca clearance (i dont think). new uca's will just allow a little more travel and alignment spec over 2.5".

I am trying to think if coilovers would do anything but i dont think so. You raise the truck but the wheels will suck in a little bit...ya i dont see that helping the lca rubbing issue
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Old 09-12-2010, 02:57 PM   #13
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08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed
 
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can you post a pic to show where they are rubbing?
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Old 09-12-2010, 03:03 PM   #14
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sees what you did there.
KPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shed
 
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Quote:
Originally Posted by 08pretaco View Post
This might help lol


under truck l..............l = 9" rim

under truck l........L.....l = 9" rim with 4.5 bs

under truck l......L.......l = 9" rim with 4.5 bs with 12 mm offset

L represents where the lugs attached wheel to the hub
I'm sorry but this is completely wrong. Backspacing is calculated by using rim width and offset. They are not independent of one another.

If you have 9" wide rims with +12mm offset, then you have 5.5" Backspacing.
If you have 9" width rims with -12mm offset, then you have 4.5" backspacing.

Here's a chart that will help you convert offset and rim width to backspacing and visa versa
https://www.rsracing.com/tech-wheel.html

The fact that you are rubbing is not surprising. In order to fit the 285's, you need 4.5" backspacing or less, and you need to trim some plastic and possibly cut the body mount.
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Old 09-12-2010, 03:06 PM   #15
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08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed
 
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Thats for that so I was right but with the wrong mentality. From what I posted...OOPS I just noticed for the last one I accidentaly went the wrong way...the L should be to the outside not inside.

Thanks for clarifying Kieth, I made a booboo with the last one. sorry

With what I posted Kieth I MEANT to show that the offset takes away from (adds positive to) the BS meaning that the BS is actually that much more.
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Old 09-12-2010, 03:07 PM   #16
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sees what you did there.
KPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shed
 
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Quote:
Originally Posted by 08pretaco View Post
Thats for that so I was right but with the wrong mentality. From what I posted...OOPS I just noticed for the last one I accidentaly went the wrong way...the L should be to the outside not inside.

Thanks for clarifying Kieth, I made a booboo with the last one. sorry

With what I posted Kieth I MEANT to show that the offset takes away from the BS meaning that the BS is actually that much more.
Actually the L on the the last two should not move. Both of those wheels are 9" wide and have 4.5" backspacing, so they are identical. However, the last one shoudl say -12mm offset, not +12.
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Old 09-12-2010, 03:09 PM   #17
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08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed
 
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Quote:
Originally Posted by KPT View Post
Actually the L on the the last two should not move. Both of those wheels are 9" wide and have 4.5" backspacing, so they are identical.
Why wouldnt the mounting point move between the last 2 if the mounting point is offset 12 mm to the front of the rim?
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Old 09-12-2010, 03:11 PM   #18
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08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed08pretaco is one of the sharper tools in the shed
 
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That link you posted btw is Awesome!
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Old 09-12-2010, 03:14 PM   #19
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sees what you did there.
KPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shed
 
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Quote:
Originally Posted by 08pretaco View Post
Why wouldnt the mounting point move between the last 2 if the mounting point is offset 12 mm to the front of the rim?
Yeah it's a little confusing, but the deal is that "backspacing" is just a term that is calculated by using rim width and offset.

Example: a 9" wide rim with +12mm offset, by default has a backspacing of 5.5".

That same rim, in order to have 4.5" backspacing, would need to have a -12mm offset.

So the third scenario you posted is impossible, because a 9" rim with +12mm offset doesn't have 4.5" Backspacing, it has 5.5" BS.
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Old 09-12-2010, 03:15 PM   #20
KPT KPT is offline
sees what you did there.
KPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shedKPT is one of the sharper tools in the shed
 
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Quote:
Originally Posted by 08pretaco View Post
That link you posted btw is Awesome!
I know isn't it sweet?....I studied it for days before buying my rims, because mine are an odd size, 18x9, +10mm offset, and I couldn't find anyone else running that combo of specs.
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