This is a 5er. I don't know what yours is.
My reseal jobI used parkin-acc.com for the wiper seals shown in that job.
For another slide, I used a bulb seal from uni-grip.com. I ran it adjacent to the OEM wiper bulb because at 12 years of age the bulb part was not sealing well enough when closed to keep the road dirt out.
"If I'm wearing long pants, I'm too far north" - 2oldman