Post-rotation vibration

[kurokoma-kun]

Rotated my tires the other day (they are directionals, the kind you swap front/back) and was getting quite a bit of vibration in front--no slop, no jolt, just vibration. Jacked it up again, recentered wheels, re-torqued lugs--felt fine at first but quickly got vibey again.

So I jacked it up again and look what I found hiding behind the rotor!
http://i218.photobucket.com/albums/cc233/mojojojo2323/IMG_0049.jpg

Cut off the 3' long piece of plastic, inspected for damage and saw none, but I'm still getting a bit of vibe. Can't tell if it's just because the good tread is on the front now... do you guys think it could have done any damage I can't see?

[Astroman]

Do you have another picture with the bag removed? (It looks like it was a bag anyway.) I had a target shopping bag float into my lane when I had my stock exhaust on and it stuck and melted on there. Stank horribly. I peeled the plastic off and now the stock exhaust has lots of red targets on it. :rolleyes:

But more than likely the vibration could be from the tread. How did you rotate your tires? I learned that you shouldn't do the "X" formation (rear right to front left, etc.) but do the "| |", or rear right to front right.

[kurokoma-kun]

Yeah, directional tires have to be front/back--what I was told to do anyway.

There was really nothing to see after removing the plastic, which was like trash bag size--or so I thought. But if I keep having an issue I'll jack er up and take another pic.

[kimona]

I really don't know if this is your problem, but minor vibrations (and increased tire noise) are very common following tire rotation.

I wonder how much flack I'll get after this post?

[kurokoma-kun]

Thanks Astroman and Kimona! :wub: If anyone flacks you Kimona, tell them to flack off! :laugh:

Yeah I'm prolly just wigging out... but here's another pic anyway. All clamps, clips and so forth seem to there and in position, but while I basically know what I'm looking AT, I dont know what I might be looking FOR, you know?

http://i218.photobucket.com/albums/cc233/mojojojo2323/IMG_0051.jpg

[Astroman]

Thanks for putting the picture up. I don't see anything that I think would cause the vibration.... Any chance you might have moved/lost one of those lead balancing weights on the rim? Sometimes those things can fall off or get dislodged/moved from their original position. The first time I drove my lebaron on the highway I freaked because it felt like I had oval tires or something. I took it into a tire place and they checked the balance. All 4 tires were way off. Turns out the last owner never bothered to have the snow tires balanced because he never took it on the highway. Just another possibility I though of... :rolleyes:

[kurokoma-kun]

Thanks for putting the picture up.

I think your name should be Sweetie-man! :biggrin:

My weights are the stick-on strip kind that go inside the wheel--they look much prettier that way :rolleyes: All appear to be in place.

[Astroman]

http://www.cyber-angels.nl/blushsmiley5.gif aww shucks... :rolleyes:

[kimona]

Well, if all checks out properly, and you still have vibration, put the wheels back to their original positions (before rotation) and check it out.

[kurokoma-kun]

yeah, did that last night...shit i dunno...gonna swap em back tonight.

I think I'm just being extra picky because i have an auto-x event tomorrow and dont like to go out there unless car is 100%--course if I dont do well i can just claim mechanical issues :biggrin:

Thanks for replies.