Things are looking up for the X5. With a winter trip on the horizon it's finally time to install the 3.15 differential, to match my rear and complete the 3.64 to 3.15 conversion. I have been running the rear 3.15 for about 9 months in RWD mode and it's great, now time to finalize and flash back to AWD. There are some other parts which will be installed in addition:


- Upgraded Level 10/Sutphin Tuning Torque Converter
- 3.15 front diff (to match rear 3.15 and reactivate 4WD)
- Brake pads
- All new suspension F/R to compliment the just-installed monoball thrust arms.
- Mayle HD wishbones w/ adjustable camber
- Replacement AC belt
- Replacement pano roof surround
- Diesel Extreme injector cleaner
- Oil change

Items not pictured:
- Replacement exterior driver door handle
- Repair pano roof partitions
- Repair Vacuum pump seal (still leaking)

I am excited to observe the difference going from RWD with the sloppy and bullied stock torque converter back to AWD with the upgraded converter. My Dragy data shows about .5g during a launch with my current setup and that is with the tires hooking up well, not absolute grip but not bad all things considered. The Dragy data from another tuned diesel X5 with similar mods shows 1.1g from a dig which is awesome. With my 3.15 gearing and larger tires I am assuming my performance won't be as ferocious but it will still be a hoot. Response/driveability around town should also be much more pleasant.


Finally put the ZL1/Hankook combo on a scale. The tall tires have a very obvious weight penalty and offset the light ~27lb 20x11 ZL1 wheels.


Hike in the rain with the doggos.