Hi all! Can anyone tell me the widest wheel size(new rim and tire) I can fit under the stock fender of a 2018 Chieftain Darkhorse? I see people doing the 18" with the 180 tire (down from the stock 19"). I believe this is a 5.5 wide rim? What is the max width that can be installed WITHOUT replacing the fender and allows to still use stock disc rotors? Basically a bit less fat of a fat tire kit that doesnt cost $4k and doesnt need much other then replacing tire and rim? Thanks!