I feel a vibration on the floorboard when i get get close to 70...its like waaaaaaaaaa...............................waaaaaaa aaaaaaaaaaaaaaa...........................waaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaa. I think its the tires...anybody alse have any ideas?

 

Tire out of balance.

 

ice/dirt/salt on your wheels maybe?

 

^ this too. As it could throw the balance of your tire off. ^

 

I have the same thing but its anything after 40/50 for me its not the tires because they are brand new and it did it with the old ones too. I've been told its a wheel bearing

 

Balance

 

Maybe at 40 - 50 could be a wheel bearing, but @ 70 is almost always a tire balance issue.