I know a lot of people have been looking for, candid, feedback on these differentials, so here you go.
I have a 2008 135i with a bolted diff for reference.
The install was actually EXTREMELY easy, backlash on the new diff vs old was actually almost exactly the same. No trimming of the housing was required and the bearing races came right off the old and onto the new with ease.
The pumpkin came without completely pulling the driveshaft, just dropped the axels and loosened the drive-shaft nut, out it came no problem. I also installed the purple powerflex bushings at the same time, this took longer than the entire diff install as my oem ones were pretty stuck in there and you can't use heat on the thin parts of the subframe. After awhile they came out with a small press setup.
With the car back together I took it around the block a few times and can happily report no clunking going from reverse to drive, no whine, and a lot less drivetrain slop with the bushings. Traction wise in a straight line is hard to tell because i need some new rubber soon but the burnout test says that both wheels are turning Cornering now feels like I can use the skinny pedal to turn the car instead of it pushing the front until massive oversteer happens. I only have a few miles on it but I wanted to sing praise for a great, perfectly priced, high quality product. If anyone is going to put something through its paces it will be me I will be going to the track soon and will report back with long term results.
I have a 2008 135i with a bolted diff for reference.
The install was actually EXTREMELY easy, backlash on the new diff vs old was actually almost exactly the same. No trimming of the housing was required and the bearing races came right off the old and onto the new with ease.
The pumpkin came without completely pulling the driveshaft, just dropped the axels and loosened the drive-shaft nut, out it came no problem. I also installed the purple powerflex bushings at the same time, this took longer than the entire diff install as my oem ones were pretty stuck in there and you can't use heat on the thin parts of the subframe. After awhile they came out with a small press setup.
With the car back together I took it around the block a few times and can happily report no clunking going from reverse to drive, no whine, and a lot less drivetrain slop with the bushings. Traction wise in a straight line is hard to tell because i need some new rubber soon but the burnout test says that both wheels are turning Cornering now feels like I can use the skinny pedal to turn the car instead of it pushing the front until massive oversteer happens. I only have a few miles on it but I wanted to sing praise for a great, perfectly priced, high quality product. If anyone is going to put something through its paces it will be me I will be going to the track soon and will report back with long term results.