After the original symthic forum shutdown I gathered up what I knew/had about bf4 vehicle stats in a document:

Google doc with Bf4 Vehicle stats

Contributions of any kind are very welcome!

Currently contains info on:

-Mobility hits

-Vehicle Upgrades

-Countermeasures

-Angle modifiers

-Motion sensor ranges

-Repair tool

-Below radar

-Missile ranges

-Weapon stats and info