In this way, I do not quite see why these bulbs are supposed to be "Off-road".
After all, they are in the absolute least that dazzling leds daytime running lights and far less than the xenon. Their power (55w) does not also exceed the legal maximum road ... their remaining scope equivalent to Philips "Blue Vision".
A tip com '?
For durability, we need to see. This is often the weak point of such - expensive - blue bulbs.