Ranger Mods

Hi guys,
Got a mate dropping over and going to set up dual battery mode and change tyre size.

Have done a number of things on my Everest with Forscan, but never tyre size changes

Have done a bit of a search but there is bits of info all over the place, so be good to know if there is a single page that explains tyre size change, so if I need to do it again, i can find info easily

In the mean time, he has a 2015 Everest and just fitted 285/65/18 tyres

So, in the short term

Which modules/values to I change? and to what values?

TIA

Think I have answered on fbook and in touch with that person now.