ETPD

So you downloaded a fancy 2015 Tahoe and installed it in the police3 slot, only to find that it rolls more than your eyes when your boss is talking to you.  Does your Silverado not drive like a truck should? or maybe your '15 Charger doesn't feel right.    There are a lot of options to choose from when deciding which handlingid you want to use for your car.  I've compiled a list of what I use for handling lines, and thus far, all have worked just fine.  For some of them, such as the Silverado and Expedition, someone else might of found a better handling, and if that's the case, please comment below letting me know what you're using and I'll give it a shot. 
 
Some people like to edit the handling.meta.  This is not a requirement, the handlingid is all you need to touch if you just want the basics.  Handling.meta is there for those who know a bit about modding and want to refine the handling lines to feel realistic.
 
For those that might be confused on what the handlingid is, it's one of the top lines in the vehicles.meta.
 
Here's an example:
 
<handlingId>police3</handlingId>  
All of these will be for police vehicles, I will not be covering modded civilian cars.  Also note that this topic really only applies to those who have modded their police fleet.
 
 
Crown Vic
 
police  
 
Dodge Charger
 
If 09-10 version, police2  If 2013+ version, buffalo2  
 
Ford Taurus, Chevrolet Caprice and Chevrolet Impala 
 
police3 (this is meant for smaller vehicles, such as the Impala) premier (this is an alternative for smaller vehicles, such as the Impala.  Use this if you don't like the way police3 feels)  fugitive (this is meant for bigger/heavier cars, such as the Taurus) felon (this is an alternative for bigger/heavier cars in case you don't like Fugitive)  
 
Ford Explorer 
 
gresley  
 
Chevrolet Tahoe 
 
baller baller2  
Ford Expedition
 
fbi2  
Chevrolet Silverado
 
sandking  
Dodge Durango
 
baller  
Dodge Challenger
 
gauntlet  
Ford Mustang
 
dominator  
Ford Fusion
 
tailgater (There is most likely a very better choice out there, I'm just not sure which would work)  
BMW motorcycle
 
policeb  
Ford F-150
 
sandking  
Ford F-350
 
sadler  sandking - may work for this as well, not confirmed  
Chevrolet Corvette
 
coquette  
Chevrolet Avalanche
 
sandking  
Chevrolet Camaro
 
gauntlet  
Nissan GTR
 
elegy  
Land Rover
 
baller  
Hearse
 
romero  
Dodge Polara
 
glendale

How can I change the audio on my car?
 
If wanting to change the audio for a default slot, such as police, police2, etc: In OpenIV, navigate to mods-->update-->update-->common-->data-->levels-->GTA5. 
 
If you're wanting to change the audio for a standalone car, navigate to where you installed the meta for that car.
 
Extract the vehicles.meta to your desktop.
 
Open the file, and find the line of the vehicle you want to modify.  You'll see this line:
 
<audioNameHash />
 
Rockstar has set it up to where the vanilla slots don't need to have anything else there for the namehash.  I'm not sure how that works exactly. For standalone cars, if it just has <audioNameHash />, the vehicle will not have any sound at all.  For most people, they never touch the audio name hash and stick with default sounds.  However, it's really awkward to drive around a Tahoe and have it sound like a Vic, right?  Below I'll list the proper way the namehash should look when you edit it, and then I'll include a list of cars you can put in the namehash to make your vehicles sound more realistic.
 
Contrary to what some people might think, if you have ELS, you can use civilian car names in the audio name hash.  However, you will also have the normal car radio activated.  The only way to fix this is either turning the music all the way down/off, or going in the options menu each time and changing the radio to off.  Before we continue, I need to point something out.  If you are not using ELS, this guide won't be as beneficial to you.  The audionamehash dictates how your vehicle sounds and if it has a siren.  If you change the namehash to anything but a police car, you will no longer have emergency services capability in your vehicle. 
 
 
If you're looking for a specific vehicle, you can search using CTRL + F and enter keyword. 
 
This is how it should look once you've edited it:  <audioNameHash>police</audioNameHash>
 
 
Crown Vic
 
police stanier  
Dodge Charger
 
2010 and under (or using the old body style), use police2 2011+ Charger, windsor  
Ford Taurus/Caprice/Impala
 
fugitive  (I personally prefer this one.  Sounds a lot meaner) police3 schafter3  
Ford Explorer
 
gresley nightshark  
Chevrolet Tahoe
 
baller  
Ford Expedition
 
fbi2/sheriff2/pranger (all three of them are essentially Expeditions, so take your pick) granger nightshark  
Chevrolet Silverado / Ford F-150 / Ford F-350
 
bison sadler  sandking (this might work better for the F-150, 350s and Raptor)  
Dodge Durango
 
baller gresley nightshark  
Dodge Challenger
 
gauntlet gauntlet4  
Ford Mustang
 
dominator  
Ford Fusion
 
tailgater  (fugitive can also work, it depends on your taste)  
BMW Motorcycle 
 
hakuchou  
Harley Davidson Electraglide
 
wolfsbane  
Chevrolet Corvette
 
coquette  
Chevrolet Avalanche
 
There is not currently a GTA version of the Avalanche, so you can refer to the suggested audio for Chevy Silervado, or play around with it and find one you prefer.
 
Chevrolet Camaro
 
gauntlet  
Dodge Magnum
 
windsor gauntlet4 (if newer version of the Magnum) gauntlet (if older version) nightshark  
 
If you think a certain namehash works better with "blank" car, send me a PM!

Hey there. I'm not sure if this is the right section to post this but it seemed the best fit. Apologies if not.

So I found a way to avoid and get rid of texture pop-ups (when you look around too fast and things can't load in time with your camera movement, the map disappears, for example). I realized this had to do with my modded vehicles but didn't want to restrict myself to only download cars that COULD MAYBE NOT bug out my whole game. This can also solve EUP's issue of not being able to load the outfits or loading very slowly. This has to do with the same issue, Memory Overload.

The video guide I created was a result of what @bikinichampagne suggested (link in the description). All I did was create a system that would allow people who frequently update their police fleet for LSPDFR (as it's my case) to downscale unnecessary vehicle textures in a repetitive and quick way. I mean, who needs a 4K game-stock carbine or a 4K dirt skin? To me doesn't make sense, even in FPS patrols. With this form of downscaling, I couldn't even notice differences. Little letters were still readable and HD as seen in video.

This way you can still play with HQ models and textures... Difference is, your vehicles won't surpass the 25MB hard limit. So you get a stable gameplay without the expense of quality.
Aim for 20MB per vehicle.

It worked for me and the evidence is in the video itself (that's why its 22 mins long but has a time table so you can jump to the section you want). If it didn't work for you, you either aren't downscaling enough textures or your PC just cant handle it. Sorry, cant do miracles. You might wanna update your PC if he starts talking about Vietnam war stories. I guess GTA 5 will be too much sand for him and no downscaling in the world will save you from this.

So, all the relevant details are in the video. I guess what I'm trying here is to teach people a good practice to optimize their vehicles. Also you won't need proprietary software for any of this.

THIS WILL NOT MEAN MORE FRAMES PER SECOND. It will stabilize your game, might get rid of some stutters but this isn't a method to solve your FPS issues. Regardless, try it and luckily you can prove me wrong.

VIDEO
 

Since the v1604  patch, the import and compression limits for all AWCs inside of Resident.rpf increased. This is because R* moved some LSUR songs from online to singleplayer. 
Check it out:
                                           
OLD                                                                                                       NEW
 
You'll notice vehicles.awc isn't included in the first screenshot, and that's the greatest news here. Vehicles.AWC, on compression can now be imported to hold 16.132mb!
So, the EXACT size of your vehicles.awc can now be:

This is brilliant, but be warned... 1kb over and you will have muted vehicle sounds. I tested this 😛

 
Happy modding!
 
 
 
More proof I spent ages checking new limit: