[dave07GT]

i had a vibration in my front end when the car was new, and the dealership re-balanced all 4 wheels. not even 4 months later, and maybe 1000 miles, i have a vibration again.

any thoughts?

[HMUSN]

dealers problem.

let them fix it.

[1FastFox]

Hit any curbs or potholes recently? definitally sounds like a wheel/tire problem...
FYI- if you have hit a serious curb and knicked up the rim, the dealer will charge you for the rebalance and visit. Something to think about before you take it in there.

[06RedfireGT]

sound like they need to be balenced again, if not its sounds like something wheel/tire related.

[Grabber523]

Put the car up on jackstands and spin them by hand (be careful you don't cut off your finger tip between the spoke and caliper) with a punch or screwdriver about 1/8 inch from the lip of the rim sitting on something that doesn't move, and check to see if you have wobbling. I had the same problem but the rims were almost perfectly straight (better than most aftermarket wheels I've seen)...however, I did find that the tires get flat-spotted pretty bad if the car sits for a little while, but it does go away after about 20 minutes as the tires heat up...does the same thing on my 06 F-150, it's just the rubber compounds being used...it may be one of those things that you just can't fix, like mine. If you get it road-force balanced, it only makes it vibrate worse...drive them off and get some Michelins, IMO...