
Tyres is a performance upgrade option for performance customisation in Need for Speed: Underground.
The packages included tyres to improve the handling rating of a car, with additional packages unlocked as the player progresses through Underground Mode.
Street (Level 1)[]

- Cost: 500 Bank
- Unlock: Beat event #6: "Rookie Tournament" in Underground Mode.
Contents[]
- Street Performance Tyre Package
Brands[]
- Package 1: Toyo Tire
- Package 2: Yokohama
- Package 3: Kumho Tires
Pro (Level 2)[]

- Cost: 1,000 Bank
- Unlock: Beat event #30: "Dead Calm" in Underground Mode.
Contents[]
- Pro Performance Tyre Package
Brands[]
- Package 1: Toyo Tire
- Package 2: Yokohama
- Package 3: Kumho Tires
Extreme (Level 3)[]

- Cost: 2,000 Bank
- Unlock: Beat event #66: "Art Center Sprint Tourney" in Underground Mode.
Contents[]
- Extreme Performance Tyre Package
Brands[]
- Package 1: Toyo Tire
- Package 2: Yokohama
- Package 3: Kumho Tires
Unique[]
Unique performance parts offer vast performance improvements over all levels of any performance part, and can only be won by beating TJ's time trial events in Underground Mode.
Upon beating a time trial event, TJ will give the player a selection of unique parts to choose from as a reward. Any unique part rewards offered by TJ at the end of an event that are not chosen by the player are made available as a reward option again for the following time trial event offered by TJ.
TJ will offer the player unique Tyres package upon them beating event #7: "TJ's Time Trial". If the player does not select the package as their reward for the event, it is offered again as a reward for beating events #26: "Keep Them Coming" and #96: "Mods to the Max".