Some bikes are very sensitive to the way they feel and behave as the tyres wear. Luckily my Vee doesn't, but several other bikes I've had do. The RF900 I had used to feel like it didn't want to turn and felt quite unstable at slow speeds like roundabouts, but was fine at high speeds. This was caused by the back tyre, even if it had only done around 1500 miles and got worse until it was replaced at the legal limit at around 2,500 and then everything would be OK again. I had a GPZ600R and that was very similar.
With regard to my comments about my experiences with rear tyre life, I'm well aware that it is due to how I ride and in reality don't really mind about the tyre life. I do however object to the misleading claims by tyre manufacturers about their new tyre giving better mileage. If I want to gently chug around at 50 or 60mph I'd use the car or buy 125 or 250cc bike. I’ll use the performance and power of the bike as and when I want allowing of course for prevailing road and weather conditions. The irony is that I rode harder and faster back in the ‘60s and ‘70s when there was much less traffic, no speed cameras and I could achieve much higher cross country average speeds then than could be done these days. Of course bikes then were nowhere near as powerful and brakes and tyres were nowhere near as good either and I’ve aged a good bit since then as well!