I got a 6th gen LX (I-4) sedan and been having vibration issues when driving. I got 17" ADR Reactions with Dunlop W-10 tires (215/45/17). The most obvious cause could be that the wheels are not balanced. Well, I've never really had this issue before and nothing has really changed with the wheels, unless a weight fell off. At high speeds, the car vibrates, not excessively but to a point where I notice it and it's annoying as hell. A few weeks ago, I had a flat tire, which I really didn't notice and drove a few miles on it, kinda ruining the sidewall (well atleast from the looks of it). I got it fixed but it seems like that's when the vibrations really started. I was thinking about replacing that tire but since I'm gonna be putting my stock wheels back on soon anyway, I'm just gonna leave it and replace the tires next spring since they'll be on the car for a few more weeks before the stock wheels/tires come back on.

One more thing, the rotors need to be replaced as well (pulsation when I brake). So what do you guys think the problem is... the bad tire, a bent rim, or the rotors that need to be replaced, or something else. I'm thinking maybe I should not really do anything to it untill I put my stock tires/rims back on and see if anything changes and then take it from there. Thanks.