I'm sure this topic has been discussed in the past, so forgive me for asking again. Wondering if anyone has accurate dimensions for the base 718 (20" wheels, but I believe that doesn't matter as the thickness of the tire offsets in difference in wheel size across all three size options)? I have a driveway that has a questionable slope. I know I can come up it based upon the angle of approach I take, but leaving the drive makes me nervous (don't want to scrape the nose). I may need to make some adjustments to my drive before my car arrives. Let me know if anyone has diagrams or info. Front and/or rear would be helpful. I may just back down the drive if I have to in the short term.