MD...no need to provide links to google and yahoo...I always check there first

Some articles recommend using 5psi lower than the factory numbers???

I was looking for X5 specific advice, hopefully from someone who's already tried different PSI and found a sweet spot.

BTW, 2 superb links I found are here:

http://www.turnfast.com/tech_handlin...ressure3.shtml
http://www.turnfast.com/tech_handlin...ressure4.shtml

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'10 X6 5.0i with 7RR Performance Package
'04 X5 4.4i with staggered 20" #168