I can't decide if I should get them or not. We're leaving for a trip to Niagara falls in a month, it'll be about 16 hours of towing round trip. The van seems to handle fine, and I had the trailer up to 75 mph with no issues (not for long! But I wanted to make sure merging and what not it would be ok). But the rear end does have a bit of a saggy butt. But, keep in mind... 1. The trailer axle has been flipped under the springs to give me some more ground clearance and so I could put on bigger tires. 2. That pic was taken with a rubbermaid container packed full of wood sitting right over the rear axle of the van, for a long trip we wouldn't be taking wood. It handled fine, but I'm wondering if the air springs would help. But..its also $80 I don't exactly have to spend right now, because I'm trying to put money away for our trip.