IMO it's worth spending the $$ on tire / hazard coverage anywhere. The RSA is covered under AAA, your vehicles factory warranty, or possibly your auto ins. I just had 4 Bridgestone run flats covered. The dealer made the call, saved me 50% .
Crazy thing about some mini vans, there's no place for a spare tire, or does the vehicle come with one. I'm thinking about one of those roof racks that can carry 3-4 gas cans, spare tire[s] and some other shit only seen on off road vehicles.