Prices of truck and bus tires, including the off-highway, jumped 2.1 percent in September from 2001 levels, according to the Labor Department's Producer Price Index. Meanwhile, the same tire prices slipped 0.1 percent from August.
Passenger car tires also rose 1 percent from 2001 levels in September but dipped 0.5 percent from three months prior.
Non-radial truck tires and tread rubber, tire sundries and repair materials all rose in price by 1.9 percent from 2001. However, non-radial prices fell 1.3 percent from August 2002 and 1.5 percent from June 2002.
The pattern of prices increasing from 2001 yet remaining unchanged or dropping when compared with previous months continued in most categories.