I had bought a Fish n Mate Sr. cart for around $220.00 tires are great for pier and hard sand. We were going to Gulf Shores, super soft sand, so I got a set of the orange tires for that trip, the were about $150.00. So I have way too much invested in my cart, positive side is I have a set of regular tires for pier, not too much trouble to change them.
I do have a set of the gray Wheeleez and like them also, I added them to a 4 wheel garden/utility cart to use for the beach items, cooler, umbrella, chairs...all needed to satisfy the wife and grand-kids all in one trip. She pulls my fish cart, which is lighter and I pull the garden cart, works out well, everything in one trip from truck/house to beach.
Oops, didn't mean to get side tracked, I think you will enjoy the orange tires, just don't over inflate and personal choice but I don't use on pier.