I replaced these one at a time in front of my white garage door i checked them after fitting the first bulb so that i could directly compare one of these uprated bulbs against the original standard spec h7 bulbs i couldnt see any difference which was disappointing however driving on the roads at night is where i really noted the difference i could tell instantly that these were much improved over my standard bulbs quite why this wasnt obvious when i checked them in front of my garage i dont know it may be the white of the garage door affected things or that the previous bulbs i had were of poor quality i dont know but i do know that i will be using these again