Our setup contains 26“rims and 1,75“Schwalbe Marathon Plus Performance tires.
I didn’t listen to my mechanic who built our wheels when he mentioned the bigger rolling resistance of those “puncture-proof” tires and that this could take away some of the joy of riding.
For us this is not true at all. On the one hand, I like the feeling of those really robust tires (one step below a tank track ;-) and the fact, that I don’t really have to care for the roads (as long as there are roads at all). And on the other hand, regarding rolling resistance, they perform surprisingly better than I thought. When I give them enough air pressure (what you usually do on a tandem), I can’t recognize any difference from other tires of that size.
After 4000 km I just ordered a spare set of those tires only to realize: Our first set has probably many miles more to go until they are really worn…