It's unclear but it sounds like Canadian Ttire just mounted the tires (and rims) on your car - and nothing more.
1) The rims could be out of round
2) The tires could be out of round
3) The rims might be lug centric, and not hub centric.
Find someone with a Hunter GSP9700 and have them diagnose the problem.
Also, check to see if the rims are hub centric. Take off all the lugs nuts. Is there a gap between the center hole and the hub? If so, this problem is not likely to be fixed unless you get hub rings! Finding the right size is going to be tricky as it varies with vehicle and rim manufacturer.