vibration when driving around

[littlerobinson75]

i have a 98 grand prix gtp, over the last few months ive been noticing some odd vibration when i drive around. it usually happens when i drive at speed higher than 50mph or when im accelerating. it only happens maybe 75% of the time. i had a problem like this 2 summers ago and my rotors had warped. i was wondering if it could be that, my wheels out of balance or something else? i could really use some help with this. thanks

 

[Pittman06]

sounds like either a slightly bent wheel or a tire hop (from a belt issue in a tire) I would go get em balanced and ask them to look for a bent wheel or tire hop, if you find it throw it on the right rear for the time being and you'll hardly notice it

 

[littlerobinson75]

Thanks for the information, i forgot my login info and today was the first day i logged in. ill definately try it

 

[DrWho]

did you ever figure this out ?