If this is something specific to an existing condition you encounter daily...
Bridjit Curb Ramps - Home

That may be interesting.

And this is awesome:
How to avoid scraping your lowered vehicle - Scion FR-S Forum | Subaru BRZ Forum | Toyota 86 GT 86 Forum | AS1 Forum - FT86CLUB
BRZ guy uses toy car to show how to drive over a bump at an angle. =)

 

I just made this to clean up the edge when it starts to get a little fuzzy:

 

I quickly discovered that pulling out of driveways in my F-Type often requires extreme --EXTREME -- angles of approach, and that has pretty much eliminated scraping. Not 100%, but most of the time.

Also, I'm going to have my guard LineX'd so that it's practically indestructible.

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