I might settle with 2.4" to be honest as I've used them on other wheelsets/bikes for a while and been happy enough.
I'm building a replacement for my klunker that'll be a bit more useable and adaptable (as I've now sold the Hummus frame so don't have a disc brake mtb in addition to the klunker) so thought I'd go with the same 2.8" tyre as I have on the coaster brake rear wheel for the front wheel (I was using a 27.5 x 2.5 on the front of the klunker and 26 x 2.4 on both ends of the Hummus).
I might settle with 2.4" to be honest as I've used them on other wheelsets/bikes for a while and been happy enough.
I'm building a replacement for my klunker that'll be a bit more useable and adaptable (as I've now sold the Hummus frame so don't have a disc brake mtb in addition to the klunker) so thought I'd go with the same 2.8" tyre as I have on the coaster brake rear wheel for the front wheel (I was using a 27.5 x 2.5 on the front of the klunker and 26 x 2.4 on both ends of the Hummus).