R35 Section manager
To a point I get that but runflat tyres cost more to produce than standard tyres so I dont think that's the only reason they are prefered by Nissan.Manufacturers fit tyres based on the commercial deals they have, best financially rather than best from any manufacturer.
Litcho recommend Michelin 4S for all round road use.
As soon as the 35 is driven at a good fast pace it is clear why runflats are used. Standard tyres still have bounce in them which maybe fine for 85% of road use but when really pushed there is a noticeable difference.