I have been unsucessful in finding a decent tire thy would be as track worthy as possible for the Strada. Anyone have any leads or ideas?
The tire sizes for the stock rims don't lend themself to seriously sporty tire choices. Try Revzilla, Tires, enter the specs and you'll probably find as good range of choices as anywhere. Maybe some Pirelli Sport Demons/Road Attacks....or maybe some Avon AV46/45 combo.
as Ignaciob said, you'd have to do a weird combo of two tires (which I wouldn't be comfortable with) to fit sport or track-worthy tires on it. This is mostly because of the Strada's 19'' front. Bummer. Although, the oem Metzelers are decent enough.. I've had them all the way to the edge, but I would never trust them leaning off the bike to take me faster. Your best bet for getting a true set of performance tires would be to find a different set of rims, I think. The cheapest way I can think of doing that is getting Terra/G650 spoke rim hubs and having Woody's or similar make a set of wheels for you. Otherwise, I'm not aware of any aftermarket rims that would fit the Strada.
If you don't use ABS fit a 17" front and get a proper road tyres set. I want ABS as a primarly function of the bike and can't find out exactly how this ABS works, so I haven't been able to do it yet. NOTE: I do NOT know if the ABS will actually be effected. I am assuming such. If I find that it uses a differential method that is independent of the relative tyre diameters I will put a 17" wheel on immediately.
You'll need to go searching back through the archives of this forum but I'm pretty sure the ABS rings are the same (48 slots in the 360° ring) on all BMW regardless of the wheel size and I am also pretty sure somebody did try a different wheel size on their Strada and test the ABS operating correctly. I think that the 17" wheels from the ABS version F650CS "Scarver" might be a direct swap (that bike is based on the old F650GS on which the current G650GS is based). My wife sold her Scarver 6 years ago so I don't have a donor bike to test this in my garage.