Simple question... has anyone out there with an '01 had dissimilar tire diameters from front to rear (without breaking the VC, of course)... if so, how did it feel?

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Specifically, I had some front end work done recently. New bushings in the control arms and new tie rod ends to boot. Did the front struts a few months ago, so finally.. the front end is tight (and aligned).

I got the car home and decided to rotate the tires - front to back, same side. I noticed that the two former rears.. now on the front.. are much meatier than the rears (former fronts).

Now, the car drives fine, but FEELS like its driving in 10" of water. It's hard to describe.. like driving in sand or something.

Is this the sign that I'm breaking the VC?
If not, what would strain on the VC feel like?