Just don't run 55 watt directly as you risk hurting your LCM, run it via a relay harness to have it powered by the battery
Extra heat could be an issue but haven't seen many threads complaining about melting components. Maybe someone can help out on that.
I've never had an issue with 35 watt in the many years of night driving. I think super dense fog (40mph on a 70mph interstate), 55 watt would be overkill and you'd have to turn them off unless there's a better way of directing the light more accurately.