Possible Clues:

• Things you can crack without damaging them
• "Are there more wheels or ___ in the world?" (viral question)
• Inspiring love, blonde bombshell actress entrances
• Exit signs point toward them
• 'Are there more ___ or wheels in the world?'
• Options, metaphorically
• They may be revolving or sliding
• Jim Morrison's band, with 'the'
• Coupe's two
• Openings to dressers, offices or rooms, say