Quote:
Originally Posted by robnitro
Yep the inflation pressures manufacturers recommend are usually a few psi too low and leave the middle of the tread worn less than the sides.
On run flats its even worse because the sidewalls are harder so a higher pressure helps the middle get contact.
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And it is exacerbated with a big v8 up front, combined w smaller tires on the staggered set up...
you've got a ton of weight, plowing the tires around- with less pressure the sidewalls get rolled over and scrubbed to death.
IMO BMW sets pressure a bit low to give a nice soft ride too. Not, as we are often told, 'because BMW engineers hold performance above everything else'
