Originally Posted by
fietsbob
As I recall with a Greenspeed* you can also get a wider than 1.5, tire to go on the back, if you choose to..
* Australian company , makes tadpole trike recumbents.
'/,
I recall an announcement of another tire for tandems or something like that that had a tougher carcass. 1.75" if my memory is correct. But I've never seen one in person let alone ridden one.