Your Leica M9 produces a raw image file containing information for 5212 x 3472 pixels or 18,096,064 pixels. In the raw file, these are represented by photosite intensities organized in a bayer mosaic pattern, not as red, green and blue channel data, so this is a very compact organization which requires a raw converter to expand and process so that it can be viewed as an image.
Once Aperture processes that data into an RGB TIFF file, at 16-bits per color component, that means these 18,096,064 pixels are represented by 36192128 red bytes, 36192128 green bytes, and 36192128 blue bytes of data for a total of 108,576,384 bytes of color intensity information, uncompressed. Theres your 100+ Mbyte uncompressed TIFF file.
Now, no (or very very few) printers want to deal with 100 Mbyte print files or 16bit TIFF files, nor is such a huge file required to make beautiful prints up to very large sizings. Most printers want a file which is sized to between 240 and 360 pixels per inch at the desired print area dimension, in 8bits per component and sRGB color space profile.
Ignoring the print size pixel dimensions, if you simply went to 8Bit TIFF, uncompressed, you'd cut the data size in half (about 50 Mbytes per file). If you then applied lossless compression to the TIFF (Zip is the best currently), you'd cut the data size by another third or so. Or you could use a maximum quality, minimum compression JPEG format file, you'd cut the size to less than half. And you would not see any degradation in the quality of your image on paper.