I’m half way through restoring an e28 535is, paint, motor, suspension, interior etc, and I will be resetting the odo to ZERO. For all intents and purposes, the car will be new and has unknown pedigree prior to restoration like 99% of 2002’s.
i wish I had reset the odo on my tii after doing a complete restoration some years back.
Whoever I sell either car to, if ever, will get a complete breakdown of the work completed, and estimated mileage at the time of the restorations etc.
As someone else posted, unless you buy a unique car, with some sort of documentation, you can’t trust the odo anyways. I would pay up for a restored car if there were records etc.