Yea nobody makes any 24.5 for a 16inch rim.
Only reason I went with a 16inch rim is because I had GST wheels, which I love, and I dont know any OEM 15" rim. W/E I already have the 26" being mounted so I guess ill just have to figure it out, if it sucks Ill see around and see if anyone is trying to jump up to a bigger tire from a 24.5" and just see if they will trade.