Hi Photoguy - my old eyes find it hard to make out detail at the top of your picture - it seems a touch on the dark side, but I think I dimly see a zip-tie right by the suspension spring.
If so, that's the one that can - on occasions - have been cinched up too tightly by the assembler in Berlin all those years ago. Yes, I'm sure you'll have snipped it off with your sharp side-cutters by the time you see this.
Some assemblers were indeed over-keen to zip up bunches of cables near the head-stock without really checking properly whether doing so adversely affected full-lock steering or lever / Bowden operation.
Interesting to note by the way, the little known fact that BMW only actually guaranteed the service life of any of the rubber components on the bike for a mere FIVE years !
I've used the self-healing self-adhesive cable wrap for many years - works well for repairing failures in the outer sheathing like we see in your picture. Or the magic "Sugru" mouldable rubber compound that sets semi-stiff. An amazing product in several colours that must be kept in the fridge once the package is opened. Very good for fixing the sheathing failure that often affects that sharp bend in the cable connecting to the top of each injector.
Incidentally part two - here's my Heath Robinson installation of my latest "Shorai" LiPo battery that's so much smaller than the OEM item, that they provide foam rubber padding to pack-out the battery holder. LiPo technology was a fantastic development in battery design, an innovation from a few years ago that completely out-dated standard lead-acid, gel or matte batteries, despite more recent developments. Half the size, a third of the weight and five-times the cranking power. Doesn't self-discharge, so even if your dash display clock is on all the time the bike is switched off, provided your anti-theft alarm doesn't sit there drawing too much standby current, if you run the bike at least once every 2 months, you never need a dedicated charger / monitor.
