Technical Paper
WIDE-BASE Tire and Rim Construction
1941-01-01
410124
WIDE-BASE rims impose different conditions of strains in tires and emphasize certain inherent performance differences, some of which are advantages and others disadvantages. After a year of exhaustive testing by the combined car and tire industries, the wide-base rim proposal seems to have settled on the use of existing tire sizes on rims 1 to 1½ in. wider than at present, giving a rim ratio of 75 to 82% of tire width as compared with a ratio of 62 to 68% of the inflated width on existing tires. The principal benefits of the proposed rim resizing combination, using present tire load-carrying capacity and 2 psi lower inflation pressure are: (1) considerably more stability in the car; and (2) a 20 to 22% increase in tire tread life.
