EXHIBIT 12.2 PACCAR Financial Corp. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES PURSUANT TO THE SUPPORT AGREEMENT BETWEEN THE COMPANY AND PACCAR Inc (Thousands of Dollars) Six Months Ended June 30 1998 1997 -------- -------- FIXED CHARGES Interest expense $ 53,661 $ 49,854 Facility and equipment rental 453 359 -------- -------- TOTAL FIXED CHARGES $ 54,114 $ 50,213 -------- -------- -------- -------- EARNINGS Income before taxes $ 23,749 $ 25,535 Depreciation 3,508 3,906 -------- -------- 27,257 29,441 Fixed charges 54,114 50,213 -------- -------- EARNINGS AS DEFINED $ 81,371 $ 79,654 -------- -------- -------- -------- RATIO OF EARNINGS TO FIXED CHARGES 1.50x 1.59x -12-