Bridgestone Battlax BT 012

I had a pair of these in 2003 on my 2002 Yamaha R6, I developed my riding a lot on these tires to the point they were the first tires I ever ditched while they were still legal. I was annoyed at the time with the performance drop off but to be honest since I had those I've had to bin most tires before they hit the legal limit.
From new they were pretty awesome although they didn't quite have the comfort and feel of the Michelin Pilots Sports they replaced. They required the suspension to be adjusted but once dialled in they had superior grip, the soft edges would ripple even on the road which looked cool (I was young).
At around 3000 miles the shoulder on the front tire was wearing more than the center due to the dual compound and the grip was starting to go off a little on the rear. I nearly highsided in the wet on a track day at this mileage, and at 4000 miles the bike was a handful in wet or cold conditions. My mate managed to throw it down the road on them despite my warnings. I had new tires on mail order which came shortly afterwards.
The Michelins had done 5000 miles and only the rear was worn out, they still gripped as good more or less as when new so I hated Bridgestones and have barely used them since.

Came as factory standard on a CBR600FB. As an all weather commuter in the UK I've been really disappointed with these tires.

I've not been thrown off yet (touch wood) as with some of the other reviews, but they have little to no feedback in any conditions, and are pretty slippery if there's any moisture on the roads. Braking distances are also abysmal in the wet. I've got no confidence in them and they're coming off ASAP.

When roads have been dry for a few days and the ambient temperature is 20+ degrees C, it's a totally different story, so I would probably consider these as a cheaper option for track day tires.

Finally, after ~1000 miles of mixed commuting/fun, they're already pretty badly worn... I'd probably only get another 2000 miles tops, although I do tend to ride pretty hard --- more careful riders will probably get 4000+. In short, not recommended; why they put these as stock on a sport tourer, I have no idea.

When these tires were new they provided excellent grip levels for the road in both wet and dry conditions. I did have to re - adjust my suspension to make the bike feel right as the tires felt vastly different from the Michelin Pilot Sports they replaced.
They were plenty good enough for road use but the rear was especially nervous on a track day giving very little warning before highside ( I saved it that time).
I found the wear rate on these tires to be heavier than most, they were both well past their best within 3000 miles.
The rear would break free very easily unless really well warmed up, and the front had become mis-shaped like a 20 pence piece (as most dual compound fronts seem to do with me). Both tires seemed to lack feel at this point even though they were not on the tread wear limit, causing the handling to suffer.
I let my mate have a ride one day after he got fet up of my whining when I couldn't keep up. A few minutes later he threw the bike down the road as the rear came round on him on a roundabout (just as I told him).
By 4000 mile both tires were on the wear bars, the front was more in the sides than the middle, and the handling had become a joke.
I wouldn't buy these again, I wouldn't have got them in the first place as I have crashed on Bridgestones (BT50's) before. They were free though because my girlfriend at the time worked for a bike magazine and wanted someone to test them. Expensive test as my mate never paid for all the damage he did to my then 2 year old bike.