I just got my Platinum trophy today (Yaaaay!). Some thoughts and tips:
- Don't pressure yourself too much. Patience and practice are key elements in getting this Platinum
- You don't need a racing wheel setup, Platinum is possible with just a DS4
- Start by getting the campaign to 100% and full gold. I found it lays a good skill base and offers enough content to really grasp the game's driving physics
- If you are stuck on a mission in single player, look up what has worked for others. Don't forget that many challenges allow at least a certain degree of car tuning and tire choice.
- If you have started the game with many driving aids on, try toning them down or ideally deactiviating them over time. You will notice that most cars feel less restricted
- For levelling up I strongly recommend using the X-Bow on Blue Moon Bay method. If you struggle with the car, max out the ride height, set top speed to 320KPH for long gearing, put CAS and TCS on max. With these tweaks you can easily beat even the LaFerrari while being kinda brain AFK. Do pay attention to the close race bonus though, it significantly shortens the time you will need to hit 50!
I am not sure that promoting sandbagging on a big site like this one is such a great idea. Sure, it puts the Sport Mode trophies within reach of more people, but I have noticed a rising denunciation of this tactic within the community. I openly admit to have used the tactic for a while at least, but I felt it significantly decreases the fun and sensation of winning a race.
For the pole position recommend entering the Qualifying time trial by yourself. Without the time limit breathing down your neck, you can shave your personal bests much more relaxed.
These are some pointers from the top of my head. If you have a question about the process, feel free to PM me here or ingame. My PSN is TAU_PS