WASHINGTON-Frank Fargo Tire Co., which won a $75,000 grant from the State of California last year to submit its retreaded tires to federal Qualified Products List testing, passed the General Services Administration test for passenger retreads. Fargo Tire can now sell passenger retreads to government agencies. By passing the QPL, Fargo's retreaded passenger tires have shown they can compete with new tires, said Fargo Tire President Norman Fargo. ``This will also give some reinforcement to federal purchasing agents who want to buy passenger retreads.''
But Fargo Tire's mold-cure light truck tires failed the test because of treadwear. It also submitted precure LT tires, which have yet to be tested.
Kenneth L. Collings Jr., manager of the GSA Federal Tire Program, said he had no idea why the passenger retreads, which also were mold cure, did better in the treadwear test than the LT tires.
In general, Mr. Collings said, mold-cure retreads don't perform as well in the QPL treadwear tests as precure, but they match precure in all other performance aspects.
There are no truck-and-bus mold-cure retreads on the QPL, he said. But Oliver Rubber Co. and Hercules Tire & Rubber Co. have qualified their mold-cure LT tires.
Mr. Fargo said he couldn't explain the failure of his mold-cure LT tires until an analysis has been completed. ``We don't know any reason why this happened; we used a tread compound from a company that passed,'' he said. ``It could have been our more aggressive tread design. We passed the mileage, but not the wear.''