Spare Part (world.needforspeed.com)

During the race we are required to win the race in exchange for spare parts with the following specifications Pro Series, Race Series and Street Series, with nine category :  

High Performance
1. Tuned Pro Series
2. Sport Pro Series
3. Improved Pro Series


Medium Performance
4. Tuned Race Series  
5. Sport Race Series 
6. Improved Race Series

Standard Performance
7. Tuned Street Series 
8. Sport Street Series
9. Improved Street Series


I see there are so many spare parts on map depends updates every week from the web world.need.forspeed.com.
- Tier1 :   806 droplocations (214 / 216 parts)
- Tier2 : 1268 droplocations (216 / 216 parts)
- Tier3 :   863 droplocations (214 / 216 parts)

Source :
NFSWorldOnline
German eXtreme Racers