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Old 02-16-2011, 07:07 PM   #1
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steering vibration

I just installed a Rough Country 2.5 lift with 33x12.5x15 Destination M/T's on the stock wheels on my 2004 Unlimited. This required Rough Country wheel spacers to avoid rubbing. I also added 1 3/4 inch spring spacers to front to level it updue to front end droop caused by winch weight. After alignment, I am getting a slight steering wheel shake at speeds around 45. After bringing it back to the shop, I am now told vibration is caused by the use of wheel spacers, and if I were to get aftermarket wheels with proper back spacing, ditch the wheel spacers, this vibration can be avoided. Does this make sense?

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Old 02-16-2011, 07:10 PM   #2
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don't forget you'll need 2" bumpstop extensions front and rear to clear the 33s, and especially to avoid coil bind in front with the BB spacers and the long RC springs. don't run aftermarket wheels and wheel spacers at the same time. also check caster and make sure its set to 5.5-6°.

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Old 02-16-2011, 07:12 PM   #3
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Never heard of that. Did you adjust your alignment to your tire size? I believe you have to if you go bigger.

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Old 02-16-2011, 08:41 PM   #4
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One thing I just noticed is that my driver side front spring isnt centered on base of spring spacer, seems to hang over about 1/4 inch towards front. I would assume if spring shifted after the initial alignment, could cause a steering shimmy?
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Old 02-16-2011, 09:00 PM   #5
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There is nothing wrong with wheel spacers as long as they are put on properly and are hubcentric (it has a cut out ring that forces the wheel to sit strait on the hub) rather than lugcentric (which use the lugs to locate it). I have heard conflicting things about the RC spacers being hubcentric or not.

You might need to get the tires balanced. Even with wheel weights they might not be true, and it sounds like a balance issue to me. There are balancing beads which go inside the tire airsoft BBs as a substitute.

The bump stops should be taken care of too Be weary of alignment shops. I have heard of some changing the computer to just read green like it is in spec.
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Old 02-16-2011, 09:21 PM   #6
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I to experienced a shake in the wheel a few weeks after I installed a 2.5" lift w/ 3/4" spacers in the front, 31s and aftermarket wheels, no wheel spacers. At 40-45 mph the wheel would shake back and forth but it wasn't violent, and then a couple of weeks later it went away?! It hasn't done it since. I like problems that fix themselves!

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