larger Pinion or smaller Pinion... Slower wear???

[Jahay]

Everyone keeps saying this... I know why i have worn it out...Because there is too much stress on it...

My Extra legnth, weighing 14-15lbs and having the motor up front to prevent wheelies, means all my power goes to the ground. And this is causing wear on the weakest part which is my pinion.

I want to reduce wear, and iheard that increasing pinion size means less wear on the pinion?