Welcome to the Forum from Western New York State!
The few campsites we've had with a patio were best with the tires just a few inches away from the edge of the concrete. That allowed space for leveling blocks on that side, and the steps to be positioned over the patio so no one stumbled off the edge.
Every day's a learning experience, though sometimes not what we expected.
2012 Jay Flight 19RD
2016 Ford F150 XLT 2X4 SC 3.5L Eco Max Tow
2010 Tundra TRD DBL Cab (Traded)
1 Spoiled Dog