This mod makes the vehicle damage a little more realistic. All vehicle fDeformationDamageMult values are set to double.

Instructions 
You NEED OpenIV 2.6. 
1. Open OpenIV 
2. Enable edit mode
3. Go to /update > update.rpf > /common > /data
4. Drag handling.meta from downloaded folder, into this location.
5. Click File > Rebuild, make sure update.rpf is selected and click Rebuild. 
6. Wait for it to complete, and you're done. Exit OpenIV and load GTA!