vibration on highway

I get this at about 120 km/h (60 m/h), the steering wheel shakes and the dashboard a little as well.

How would you know if it is the allignment or maybe 1 or more wheels are unbalanced? I have 2 new front tires and dont want to damage them...so far there is no uneven wear on the front tires. Just wondering since I would rather not spend $60 + tax guessing on allignment and maybe for nothing.

Thanks.

GO get the balanced checked.

If thats not outta spec then its probly an alignment issue.

Hope that helps.