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

[Jahay]

As some of you know... i have been having serious pinion problems wearing out within 4 lipo packs...

Now i am considering increasing my pinion size from 17-18t to 22t-23t pinion

Obviously my top speed would go way over what is recommended blah blah blah, but its all good as my truck is currently locked in 2nd gear, so what i will do is lock it in first gear which should also allow the truck to acclerate quicker and hopefully take the strain off the pinion so much and the gear box hopefully...

My gearing currently is 17/47 /39 tranny ratio = 1.5366847826086956
i will goto 23/44 /44 tranny ratio = 2.215277777777778
Gd idea???