You're supposed to use NGK Iridiums BKR6EQUP on the 4.4 V8, not Bosch's. I think if you can get away w/ it, you should exchange them for the correct plugs. At 100k, you're better of doing a complete cooling system change also.
http://www.xoutpost.com/bmw-sav-foru...?highlight=ngk
http://www.xoutpost.com/bmw-sav-foru...?highlight=ngk
Letting a BMW slide on it's maintenance will snowball into many worse things, and at 100k, you're due for many more things that just spark plugs.
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650hp 10 X5///M - Stage 2, Vibrant 1794's , gutted cats, custom intake, AC Forged 22's 325hp 98 BMW 740iL - ///M5 6spd, www.bavengine.com w/ Performance Option, electric fan, CF intake tube w/ heatshield, Mag 14816 w/ notched bumper, Bilstein/H&R Stage II/Powerflex 600+hp 02 Harley F150 - MHP900 Stage 3 engine, KB2.3, 8# lower, 60# inj, Walbro FP's
135hp 01 TL1000R - M4 full exhaust, K&N, Yosh box, -1/+2 gears, 2CT's
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