42dodgeguy Posted October 9, 2019 Share Posted October 9, 2019 Hey Pontiac guys: I posted this inquiry on the Oldsmobile site, and didn't get any response. I'm wondering which G.M. cars of the early to mid 30's had a wheel bolt circle of 4 1/4 inches. I'm thinking possibly Olds and Pontiac? Possibly others? I know Chev. had 6 bolts. Any response would helpful to me in identifying application of an old spare tire lock I have. My measurements tell me it fits 4 1/4 inch circle. Has a Hurd key with G.M stamped on it. Thanks Link to comment Share on other sites More sharing options...
Bloo Posted October 9, 2019 Share Posted October 9, 2019 (edited) Chevrolet Standard (not Master) in 1934, 1935, and 1936 use that weird 5 bolt pattern. I don't think anyone else inside or outside GM did. I have never heard of that pattern on a Pontiac. In 1934, 1935, and 1936 Pontiac used the familiar Chevrolet 6-bolt pattern. In 1937, they switched to a large Buick/Olds 5-bolt pattern IIRC. Before 1934, I don't know. Edited October 9, 2019 by Bloo (see edit history) Link to comment Share on other sites More sharing options...
Manuel Posted April 9, 2021 Share Posted April 9, 2021 Hi In pre war cars I can only find Chev Standards as mentioned. In later cars - Old Holdens, old Volvos and old Ford T Birds (All pre 1989) used 5x4 1/4." Manuel in Oz Link to comment Share on other sites More sharing options...
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