Hmm, I've had for the car for 20 years (it's even older). Where I originally lived the roads were always smooth + paved well (also elevation was basically flat). Now that I'm in a city with actual hills (along with snow plows that ruin the roads), that's when the problems occurred. Seriously never seen so many potholes before in my life!

Not a cattle grid, but wouldn't have thought of the pothole angle without it.