tyres dilemma

I have my jimny for over 5 years now use it for offroad only before I had these tyres

I had no problems at all especially no cv broken for more than 3 years and they were also good.
these last 2 years I have these

they r good no doubt but tooooo heavy compered to the others and nearly same size but must have a good stock of cv and before never needed rocklobsters cases and the car did very well when compared to the landy. these r the same version of ninsa turbo and also same weight nearly.
my question is can it be that the cv r going because of the weight and not of the size of tyres
another thing I seen on this forum a lot of mud offroading, here we only go in quarries so rocks only

I ran 31s on standard shafts and transfer box I personally think a lot is down to driving style have a wheel spinning in the air and slam it down something will shit itself simple as that its called mechanical sympathy drive with some of that and things will last longer