My K1200S bulbs lasted 25k too. I'm using Sylvania bulbs from the auto shop, I had been using the super high output ones. I'm hoping to get longer life out of this standard bulb. The main problem I have with replacing them is my 2XL glove hand size, I even use a rifle cleaning rod with patch attachment cut off at the end to form a 'Y' shape and it's still a bear for me. It just took an hour to switch it because of my hand size- ridiculous. The good news is it's my biggest gripe about the bike so overall we're doing pretty damn good.