How easy to get a spare part in any maps?

According to my experience, I just need a confidence driving with a car that can adjust my position in second place of each race, because at least I can get the silver card and could win a standard spare part for my car, but sometimes I also can win a position The first of these events, in the hope that my opponent could hit a lot of cars on the road and I could win.
Too many spare parts that have found me from my position in second place, as an example of tuned / sports for the engine, forced induction, transmission, suspension, brakes, and tires.
      I want to share tips and tricks for you:

 1. For car Tier1, please join the event:
     - Rose Wood Park Loop (11) Circuit
     - Stage Hwy 99 (14) Sprint
     - Diamond & Union (16) Sprint
     - Skyline Avenue (20) Circuit
     - Verona Tunnel (21) Sprint

2. For car tier2:
     - Rock Ridge & Union (18) Sprint
     - Verona Tunnel (23) Sprint
     - West Part & Lion (23) Sprint
     - Lions & Hwy 201 (25) Sprint
     - Agostini Avenue (26) Sprint
     - State & Warren (26) Sprint
     - Rose Wood & Lions (28) Sprint
     - Lion'S Challenge (29) Sprint

3. For car tier3:
     - Water Front Road (32), Spade Street (47), Eagle Drive (49), Station & Fisher (49), Stadium & Chase (50), Union & Hollis (50),
wish you luck in every maps.

Regards,

misshacker (50)