Which option correctly lists the rear tire pressure value?

• A. 25 psi
• B. 28 psi
• C. 29 psi
• D. 33 psi

Answer: (C)

Tire pressure must be set to the manufacturer's cold-inflation specification to support the load and maintain stable handling. For the rear tires on this wheel loader, the recommended cold value is 29 psi. This provides the right balance of a sufficient contact patch for traction and even load distribution while avoiding excessive flex and heat buildup. Underinflation, such as 25 psi, leads to excessive tire flex under load, overheating, and faster wear. A setting like 28 psi is close but does not meet the stated spec, which can result in inadequate load support. Overinflation, around 33 psi, reduces the contact patch, decreases traction, and increases the risk of tire damage from impacts. Always verify the exact number in the operator's manual and measure cold before operation, since warm tires read higher.