This is the same issue that Software Recommendations facedSoftware Recommendations faced: 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 that qualify for the tour. For Hardware Recommendations, this query comes up empty.
Another query, 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.