This is the same issue that [Software Recommendations faced](https://softwarerecs.meta.stackexchange.com/q/888): the site's expectations of questions/answers are pretty much incompatible with those of the Tour. In two years of existence, they got [_two_ questions](http://data.stackexchange.com/softwarerecs/query/92078/possible-about-questions) that qualify for the tour. For Hardware Recommendations, this query comes up empty. 

Another query, [Possible tour questions and near misses](http://data.stackexchange.com/hardwarerecs/query/342500/possible-tour-questions-and-near-misses), identifies one "near miss": that question will be eligible if it gets the score of 5, one more _short_ answer (under 400 characters), and at least one comment on one of the two short answers.