@Spitfire7 Download any of my Add-on Mod. pick the latest one. and once you have installed my Add on dlc. for example, leo2a7. put your vehicle files along with my vehicle files in the dlc. in vehicles.rpf. i think you know how to get there. anyways. after placing your files , just copy paste your vehicles.meta & handling.meta lines into my meta files. respectively. after this you can spawn your car by the vehicle file's name. Note: you must give vehicles files the same name as mentioned in vehicles.meta & handling.meta . i hope you understand my meaning. i tried.
@FoxtrotDelta and @Spitfire7 Sorry I joined the party late. I have read the entire thread found the vehicles.meta file which is located in Grand Theft Auto V\mods\update\update.rpf\common\data\levels\gta5
however, after adding these 3 lines
@Spitfire7 okay i just double checked. the screeching sound comes only, when you press the Brakes (left trigger) all the way too suddenly. if you press the brakes as normally people do while driving . it behaves just as it is supposed to. you are too heavy footed (or in this case heavy fingered). or may be you don't have a controller and play though a keyboard?