I'm driving car's since years and never actually considered changing anything on them. As long as there running I'm happy.

Now with the motorcycle, well I got it since 2 weeks now and did already the first modification to it. I replaced the standard light bulbs with some fancy high lumen light bulbs. And boy what a difference these make, I'm finally able to see something on the highway at night and feel save driving on it.

So far defiantly the most rewarding 100$ I invested so far and cheaper than fixing a couple of broken bones, because I didn't see the pothole at 75mph.

I also know that I will install the same light bulbs in the next car I own, I'm just amazed at the difference. It's really light and day.