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I had P7 summer runflats on my X1 s28i M sport.
When it's hot the fronts would get over 42 psi which is no good.
40 hot is about max for front , and approx 43 hot for rears.
I didn't need to add 4 psi to the 35f 38r cold because the heat gets it too high already.
Of course the Pzero might act different.
If front doesn't grip you have too much in front tires.
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