I'm not using one. HOWEVER, I'm considering trying the spare and false floor I still have in the '18, for a different reason: I bought a folding electric-assist bicycle so I can ride on paths and trails elsewhere, and that split-level floor may be a problem. If the spare and false floor level the cargo area, I may install the spare and use the floor for that reason. I don't need the lost cargo space.Leftiebiker,
What was your final solution on the spare tire for your 2018 Leaf?