...I'd consider going to LED if they are the same brightness or better simply for the piece of mind of not having to worry about changing bulbs...
In my experience LED tailight bulbs typically last less than a year. The wires in their bases have been the weak spot on the ones I've bought.
That said, I just replaced them again. Maybe this batch will hold up better.
Why do I keep replacing them with LEDs when I've had such poor luck? LEDs light up a split second before incandescent brake light bulbs do. When you see that split second difference in real life you'll see how significant it is. Even at 30mph you go over 4 feet in less than a 10th of a second.
"“Our research shows that
between 37% and 74% of rear-end
collisions are preventable by early
warning systems.... Just 0.5
seconds [500 ms] in early warning
would reduce rear-end collisions
by 60%.” Two UMTRI studies
conclude that LED signals provide
a braking response time
advantage between 170 and 200
ms under favorable lighting
conditions and up to 300 ms
under adverse lighting conditions
(e.g., viewing at a distance with
high-intensity illumination on the
lamp surface). Note that a 200 ms
improvement in braking response
time is equivalent to a 19.1 feet
reduction in stopping distance at
a speed of 65 MPH."
http://chemistry.beloit.edu/BlueLight/pages/hp/an1155-3.pdf