Don't worry Tom, when you get on the freeway, up to speed, the rest of the high speed (relative term)  noises (read: rattling, wind, etc.) will cancel out most of the tire noise. ;)

Check to see that they are installed rotating in the proper direction ... the little arrows, just to be sure.

bob ... accustomed to tire noises by now so my tire-noise-ear is slightly deaf.

1st thing I observed is how noisy they are
> compared to my old Michelin LTX Mud & Snow All Season tires, & I
> haven't even been on the freeway yet.