For the "visual learners" among us...
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I brought the car to the dealer last year to replace the rear tires (blue dotted line). I asked them to replace the worn tires with Pirelli P-Zeros like the original ones. The original tires were not runflats. I can't remember now if he told me the replacements would be runflats or not. At any rate, the replacements are exactly the same as the originals except they are categorized as runflats (green dotted line). Both are BMW star-rated.
My understanding — supported by the data — is that runflats will wear faster because the sidewall is stiffer. I assume this means the tread is loaded a little heavier when going over bumps and other disturbances.
Despite being smaller, the front tires are hanging in there. I assume this is because they are not exposed to acceleration or regeneration torque.
As expected, the snow tires are wearing pretty fast, too, but because all four are the same size, I can rotate them F to R.
Question for the dual-motor guys: Do you see this same disparity in rear-vs.-front wear? Or is it more even?
I brought the car to the dealer last year to replace the rear tires (blue dotted line). I asked them to replace the worn tires with Pirelli P-Zeros like the original ones. The original tires were not runflats. I can't remember now if he told me the replacements would be runflats or not. At any rate, the replacements are exactly the same as the originals except they are categorized as runflats (green dotted line). Both are BMW star-rated.
My understanding — supported by the data — is that runflats will wear faster because the sidewall is stiffer. I assume this means the tread is loaded a little heavier when going over bumps and other disturbances.
Despite being smaller, the front tires are hanging in there. I assume this is because they are not exposed to acceleration or regeneration torque.
As expected, the snow tires are wearing pretty fast, too, but because all four are the same size, I can rotate them F to R.
Question for the dual-motor guys: Do you see this same disparity in rear-vs.-front wear? Or is it more even?
