I haven't got them yet, but yes, the curves are going to be the biggest challengeHow hard was it to apply? I was thinking it would be hard to get the bubbles out when you are going over the GS part of the tank. It was a little difficult installing the decals on my bags because of the indentations for the BMW logo. I used a heat gun and poked pin holes in it to let the air out. The bag decals are really thick, I'm not sure if that makes them easier to install or harder? It's much easier applying a decal over a flat surface on a bag than the curved surface of a tank.