Same thing could happen with a stock bulb.I've not experienced it... But then I took the view that for driving lights, I don't need to spend top dollar, so Chinese knock-offs are OK. Headlight on the other hand, is fairly important. If that goes out on me on a dark & very wet night like my cheap Chinese aftermarket LED H4 bulb did over Easter weekend 2014... miles from civilization... (I could tell quite a story there, but it's enough to say I learned my lesson)... When that happens - you're pretty much screwed.
So for my final and lasting LED headlight upgrade - I spent my money on quality!
Yep... But the stock bulb just isn't as cool as LED. My point was that H4 bulbs, whether LED or stock, are simply nowhere near as robust as something like JW Speaker's 8700 Evo unit.Same thing could happen with a stock bulb.