These are what I use: https://www.amazon.com/PIAA-10727-Night-Performance-Halogen/dp/B00EUU789C/ref=au_as_r?_encoding=UTF8&Make=Nissan%7C67&Model=Xterra%7C901&Year=2008%7C2008&ie=UTF8&n=15684181&newVehicle=1&s=automotive&vehicleId=1&vehicleType=automotive I tried a set of the 4000K bulbs as well but they did not contrast well on a dark road. These light have a bit of yellow color which shows up better on dark pavement.