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The Bentley Manual (1970-79) sez:
------------------------------------------ Conventional Tire Inflation Pressures (Bias ply): Beetle, Ghia, to December 1972; 1970 Convertible; With 1-2 persons - 16 psi Front, 24 psi Rear; Fully loaded - 17 psi Front, 26 psi Rear Super Beetle, Convertible from 1971 up to Dec. 1972; With 1-2 persons - 16 psi Front, 27 psi Rear; Fully loaded - 18 psi Front, 27 psi Rear All models, from Jan. 1973; With 1-2 persons - 18 psi Front, 29 psi Rear; Fully loaded - 18 psi Front, 29 psi Rear -------------------------------------- Radial Tire Inflation Pressures (Radial ply) Beetle, Ghia, to December 1972; 1970 Convertible; With 1-2 persons - 18 psi Front, 27 psi Rear; Fully loaded - 18 psi Front, 27 psi Rear Super Beetle, Convertible from 1971 up to Dec. 1972; With 1-2 persons - 18 psi Front, 27 psi Rear; Fully loaded - 18 psi Front, 27 psi Rear All models, from Jan. 1973; With 1-2 persons - 18 psi Front, 29 psi Rear; Fully loaded - 18 psi Front, 29 psi Rear - NOTE: Increase the pressures in conventional bias ply tires by 3 psi for prolonged high speeds but never exceed the maximum tire inflation pressure designated on the tire sidewall. Glove compartment in my 74 super sez 18/29 for bias and radial. I was just wondering if these values were right or not. Probably wouldn't hurt to have mid 20's pressures. But it would probably drive like a tractor any higher. Thanks for everyone's help! Lynn 1974 Superbeetle "Mike64Bug" > wrote in message ink.net... > The 18/29 psi applies to the original equipment bias ply tires only.(which > you > don't have anymore) Radial tires have always required more air pressure > than the same size bias ply tire. 18 psi in a radial tire would be > dangerously > low. Radial tires are not supposed to have a bulge in the sidewall when > you > look at them from the front or back like a lot of people seem to think. > On the other hand max pressure(35psi) for a radial tire that size would be > a > bit too much unless you were carrying a ton of extra weight. You'll > probably > find that mid twenties in the front works well. >>>>Mike |
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