2005 Honda Accord EX v6 started having vibration at 55 so i thought wheels need to be balanced. i took to Honda and they balanced. Wife drove home and said still vibrated. so took back and rebalanced and road forced. drove home same thing vibration at 55 shakes car even my radar detector shakes. took to service manager he rode and noticed vibration and said it was because she of the plug she had in it from a screw she run over, so i went and bought 2 brand new tires for the rear. now it still vibrates plus my steering wheel is crooked alittle when driving straight. probably need a 4 wheel alignment but i dont think that will solve the vibration problem. any ideas or suggestions? Thanks in Advance

 

alignment b/c of the steering wheel... check tire pressure? bent rim?