235 are definitely the right choice - apart from a little trimming of the arches, you won't need any other mods. If you need a really good example, look at the Camel Trophy Discoverys, which used the same 6.5x16 wheels and 7.50 tryes as the 110s, with the "Camel cut" on the arches. If that tyre diameter was chosen by LR for those events, you know it's the best choice.