Pajero Sport tires without rubbing / clipping

[LivinLOS]

Can anyone confirm the largest tires sizes on the stock 18 inch rims that dont rub at all ?? Or cause any issues. 


Long Version. Trying to help my old man out who has just bought one in the UK, comes with stock 265-60-18s (775mm dia) which look VERY under tired in the arches. 

I quick scan online says 275-65-18 is fine (815mm dia) and even one post of 265-70-18 (828mm dia) claiming no clipping but the pics he posted look awful close. 

This is for my old man who wants a bit more tire but REALLY doesnt want to put up with rubbing or clipping. Speedo drift is ok but obviously dont want any ecu / computer error issues, I doubt it at the kind of change I am talking but modern cars not sure ??  

Blackcircles has better choice in the 275-65's.. Geolander and cooper AT3's top of the list.