There are some legal considerations concerning brake lights. Technically putting LEDs into incandescent signal housings is illegal. If insurers and lawyers become involved at some point and it is revealed that such bulbs were installed.............
Pulsing and strobing brake lights is illegal. The center mounted third brake light also has some rules it must follow. I am not sure it is legal to have 4 brake lights. It might just be the two main ones and the center mounted third light.
Enforcement is another matter, but I think it wise to not attract attention from enforcement, while making oneself visible to all behind.
https://www.ecfr.gov/cgi-bin/text-idx?node=se49.6.571_1108
Good voltage delivered to new 1157 or 3196 Incandescent bulbs with shiny reflectors and unclouded clean lenses is pretty darn bright.
People are going to do what they want regarding vehicular lighting, safe or not, legal or not, wise or unbelievably stupid.
Do not assume that anything new or with the letters LED in the description, is an Upgrade. I tried some Amber LEDs in my turn signals that would have been horribly unwise to employ. but I really really wanted my 25$ spent to be an upgrade, but they were NOT, and it took a while to allow myself to acknowledge my purchase was a complete waste of money and to return the incandescents.
Phillips makes some signal light LEDS that are tested to work properly, in a very few vehicles, but at least their build quality is high. but they are not cheap.
https://www.amazon.com/Philips-1157-Intense-Vision-light/dp/B00P2D415K
https://www.amazon.com/Philips-1157...=1498455878&sr=1-2&keywords=phillips+1157+led
One other consideration with LEDS in place of incandescent, is LEDS get dimmer when they heat up. On a side by side comparison the LED might appear to be brighter when still cool, but hold the brake light down for 5 minutes, like one might do in traffic and the LED could very well be dimmer than the INcandescent.
http://www.thetruthaboutcars.com/2015/03/piston-slap-traversing-world-led-retrofit-bulbs/
Be objective when installing LED bulbs in incandescent signal housings, View them from all angles, and insure that there is enogh brightness difference between the dimmer and brighter filament, and recheck the LEDS for failures every so often.