Review on NGK PLZFR6A 11S Laser Platinum Spark by Jim Plump

I bought double platinum plugs from Bosch because they were a bit cheaper and I was told Bosch plugs fit my car. And also because I didn't know exactly what was in my car until I took everything apart. When I started taking out the spark plugs, I found that my car had NGKs. But since I just got the Bosch spark plugs I moved on. I immediately noticed that the car (2009 BMW e90 - model LCI) started to shake. I winced when I started. I rode it a few miles hoping it would go away, but it didn't. My car ran perfectly before. I just wanted to do coils and spark plugs as it has done over 110,000 miles. I didn't know if it was a bad coil or a bad connector. I didn't have time to bother with it either as I needed the car the next day. So, without taking too many shots in the dark, I just bought these NGK plugs 5987. Installed them and immediately the shaking went away and the car purred like a cat. Perfect plugs. Buy them here as they have the best price. I had to buy from NAPA (due to lack of time) for almost $15 each.