How does track load influence tire pressure targets and contact patch during a race?

• A. Track load has no impact on tire pressure targets.
• B. Higher load requires lower pressure to maximize contact.
• C. Lower load requires higher pressure to prevent deformations.
• D. Track load is a key factor in selecting tire pressure targets to maintain the proper contact patch and grip.

Answer: (D)

Track load is the vertical force pressing the tire into the track, and it directly shapes how the contact patch forms. As you brake, accelerate, or corner, the load on each tire changes, so the tire can deform differently. If you don’t adjust pressure for higher load, the tire can squash too much, causing the contact patch to become oversized or mis-shaped, which can heat up the tire and make grip less predictable. Raising the pressure to match higher load keeps the footprint within the intended size and shape, helping maintain consistent grip and faster response. On the other hand, lighter load lets the patch spread more, so lower pressure can be used to maximize contact and grip without risking excessive deformation. In short, load is a key factor in selecting tire pressure targets to keep the contact patch properly sized and the grip reliable.