[Red Herring]

To wear away the shoulders on a front tyre enough to lose the profile in 3,000 miles you would need to be a fairly committed rider, in which case your rear tyre would have been pretty much gone by now. Try nosing your bike up to a couple of others and comparing the profile on yours to theirs, that might give some indication but bear in mind that some makes of tyres wear and feel different to others. Might be worth checking a couple of other things whilst you're at it. Have you checked your tyre pressures recently, is it possible you've used a dodgy gauge and over inflated them? Have a look at your preload, could someone have wound the adjusters all the way in (wouldn't be the first time someone has done it for a laugh). Finally I'd have a look at the head bearings. You'll need someone to help you but basically pull the bike up on the side stand so the front wheel is off the ground and turn the steering lock to lock. Should move freely with no notchiness or lose play. Good luck.