During my relatively small amounts of down time I sometimes like to unwind with a beer, a few friends and play a game of GTA V on my PS4 (which largely collects dust). Because I do not get to play that often, I have resorted to finding ways to shortcut the process of getting money and XP.
In my travels I discovered a money glitch which nets you a nice little profit and works as of January 26th, 2015. To my knowledge it works on all platforms (last-gen and current-gen).
The beautiful thing about this glitch is that it currently skips the almost one hour waiting period.
Step 1: Buy a Rat-Loader for $6,000 from southernsanandreassuperautos.com
Step 2: Go into a Los Santos Customs
Step 3: Scroll through the suspension list and make sure the default suspension is selected.
Step 4: The “Sad Trombone” horn is now free to select from the horns menu. Select it and then equip it to the vehicle.
Step 5: You can now sell the car for $16,000 which should net you a nice $10,000 profit.
Step 6: Repeat the previous steps to keep netting yourself a tidy profit. Considerably faster than doing missions and less time consuming. This also bypasses the wait-time because purchasing cars via the in-game internet has no time restriction like off the street vehicles.