Right. When I was getting near 6K miles, I was already able to notice a difference in the tread wear between the fronts and rears, so I figures I might as well replace the rears once during the life of the fronts. No sense wearing out all 4 tires, then at winter time I'd have to buy 4 instead of 2.
If 2 X-Ice3's are this squirmy on the road, I certainly don't want 4 on the car!
On my way to work yesterday, I had a clear stretch of open highway, so I ran it up to 110, the tires didn't feel any better or worse at speed.
Ngogas - "Effect", not "Affect" in this use of the word.
And really - nobody told me XIces on the rear and Primacys on the front were a poor idea. Not the Tesla service center, not the tire shop, no one. Maybe I should have known, but it never made a noticeable difference on my 1971 Plymouth Valiant. Back in those days, getting a half-worn pair of tires CHEAP was the only concern. Brand name or tread design was never an issue.