Ya, the swampers aren't my fav , lol when they were newer, when cold felt like they were square until it heated up round.. They stayed more round as time went but wow new, I had to drive like 5kph , till warmed,.
i just reordered another set of my 39.5x13.5x16.5 Iroks , they tend to flat spot not to bad,, itsmore so the "look" I like, big fat tires , plus I keep air pressure up,
funny thing i musta replaced everything , springs,shocked,pitman,idler arm,uppers and lows,
land this swampers cup bad,
i didn't see any cupping on the iroks,well mega minor
I'm sure in a couple years I'll upgrade to a 17" wheel and radials... I'm thinking this is my last bias ply run, hehe