Oh it’s done great on stairs. The place I get my pet supplies from there is a staircase I use and it works just as advertised by rolling right up & down them with 40lbs of dog food or cat litter plus some groceries. Goes easily over curbs if you don’t hit them crooked. I have flipped sideways because of miscalculation before and it does not like rounded ones at all; otherwise I’ve been pleased. Says it holds something like 150lbs but I went to the warehouse club and loaded it down with drinks and frozen foods and it was a pain to turn but otherwise rolled well & got up the bus stairs relatively easily given the weight. I may have been right at or exceeded the weight limit that time.