Tire codes say it was made in 2010. They're bridgestone bt45s.
Any clue why this is happening? And is it safe to keep using them? I have about 2 more seasons of tread left on the tire, so it'd sort of be a shame if I switched them out now...but the cracks are all over the front (none on the rear)
Heat cycles, maybe? Only thing I can think of is that I'm on the highway & WOT within 5 minutes, then as soon as I get off the highway I park it. The bike doesn't sit outside when it's at home, so I can't see it being from the weather