Yeah, ground clearance dimension is the least of it. You'll have to test, or find some one with a g2 to test. I have a Flat Level driveway. But the ramp from street to sidewalk is straight and short enough to scrape my gen 1. It hasn't been a big deal fortunately, almost 3 years of scraping no visible damage to the air dam. My neighbors driveway, which is exactly the same dimensions and flatness, is tapered a bit more on the ramp, so no crown at the sidewalk, and it doesn't scrape there. Gen 2 does allow a bit higher approach angle (so I hear).