I run the Bosch Platinum +4s too (went in 90k miles ago).

No rough running issues (passengers sometimes ask if it's running at red lights, idles that smooth). MPG is good, 400 miles per tank around town, over 550 miles/tank hwy (running 75 mph).

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'03 X5 4.4 Sport, last of the M62s (8-03 build date)
I believe in deadication to craftmanship in a world of mediocrity!