CTCV Posted July 17, 2021 Share Posted July 17, 2021 The issue for me at this point is how to measure for bolt pattern. On 5 lug I knew it to be outside of one stud to the center of the other. (after skipping one) If this the accurate procedure for KH wire wheels then I am getting 5 on 6.5 which i see no listing for that size. 1932 90 series Buick info says 5 on 5. What am I doing wrong? Tony Link to comment Share on other sites More sharing options...
Jim Nelson Posted August 11, 2021 Share Posted August 11, 2021 Welcome to Buick insanity. My 35-50 series had one of three sizes in 35. The 35-40 series had (all 5 bolt). a 5" bolt circle. Measure center to center 40 series measured 3" center from one to the next. Mine is a 50 series and has bolt to next bolt of 3-1/4 " spacing for a 5-1/2" bolt circle. Their 60 series had the 6" bolt circle. It also, on their 80 series, MAY have had a 6-1"2 bolt circle. Buick was having a cost issue in manufacturing - standardization ? ? duh - - - Link to comment Share on other sites More sharing options...
CTCV Posted August 12, 2021 Author Share Posted August 12, 2021 16 hours ago, Jim Nelson said: Welcome to Buick insanity. My 35-50 series had one of three sizes in 35. The 35-40 series had (all 5 bolt). a 5" bolt circle. Measure center to center 40 series measured 3" center from one to the next. Mine is a 50 series and has bolt to next bolt of 3-1/4 " spacing for a 5-1/2" bolt circle. Their 60 series had the 6" bolt circle. It also, on their 80 series, MAY have had a 6-1"2 bolt circle. Buick was having a cost issue in manufacturing - standardization ? ? duh - - - A Fire Department in KS has a fire engine back sitting on a 90 series chassis. I saw it had different wheels. Came to find out many years ago someone had made adapters to attach 16 inch steel wheels to the hubs. Link to comment Share on other sites More sharing options...
Barney Eaton Posted August 12, 2021 Share Posted August 12, 2021 Here is more info than anyone needs....... https://www.google.com/search?q=how+to+measure+wheel+bolt+pattern&oq=how+to+measure+wheel&aqs=chrome.0.0i512j69i57j0i512l8.10508j1j15&sourceid=chrome&ie=UTF-8 1 Link to comment Share on other sites More sharing options...
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