Depends. A 135i, 5 series, 6 series, 7 series, M series, X5M or a X6M are fast but anything else are not as fast.
32m
13m
Yes, there is an iPhone power meter app for the BMW M. It is free, and promoted by BMW on their site, http://www.bmw.com/com/en/newvehicles/mseries/x5m/2009/g_meter.html. Here is the direct link to the Apple App Store: http://itunes.apple.com/us/app/m-performance-meter/id344494968?mt=8
On a BMW X5 M, the oil filter is typically located underneath the vehicle, near the engine. It is usually positioned towards the front of the oil pan, making it accessible from underneath the car. To change the oil filter, you'll often need to lift the vehicle and remove any protective covers if present. Always consult the owner's manual for the exact location and specific instructions for your model year.