1956 Century (Serie 63) - Bolt Pattern ?

[julianbel]

Hello everybody and greetings from Germany.

I need for the approval by german boiler code new rims and wheels. I bought the car last year in Nebraska. The sport rims are on the car became no approval. Now I want buy some Cragar Classic rims but i do not know the bolt pattern and size for the rims and wheels i can use for the car. I hope someone can help me here (sorry for my bad english).
Jörg

[Snake-Man]

Hi Jorg. The bolt patter is 5x5 (5 lug, 5-inch diameter); and the stock wheel dimension is 15 inches x 6 inches.

In metric, that would be 5 lug by 127mm for the bolt pattern; and 381mm x 152.4mm for the wheel dimensions.

[julianbel]

Hi thank you very much,
i get another answer from a wheel dealer. He said the bolt pattern are 5 x 4,75 ?

[Buford26]

Nate is correct, it is 5x5 for the large series Buicks. The 5x4.75 bolt pattern was used on the smaller series Buicks, like the Skylark/GS and other GM cars.

[blvd cruiser]

julian..........if you want to put cragers on you have to buy wheel adapters with 7/16 studs and 1" thick.........use either 5 on 5 or 5 and 4.75 bolt pattern....they will accomodate any 15" or 17" wheel......the lug bolts are to short to mount after market wheels...........blvd cruiser

[bob k. mando]

the lug bolts are to short to mount after market wheels


if the lugs are too short then i should think it would be far better for him to drive the old lugs out and install new, longer ones.

[johnnyb56]

I'll post this just for reference.
Last June, I bought a parts car for my '56 Special 4 door. The only problem with the parts car was it had been sitting up on blocks in this junkyard for 25 years; no wheels. Somewhere, I came across this cross-reference list of all vehicles that had a 5 X 5 lug pattern:

5 X 5 Hub Bolt Pattern

1935-75 BUICK: All except Skylark, GS, Special and Century (after '61)
1935-59, 1968-85 CADILLAC: Deville, Fleetwood
1971-76 CHEVY: BelAir, Biscayne, Caprice, Impala, Kingswood
1971-91 CHEVY/GMC: 2WD 1/2 ton Blazer/Jimmy, Suburban
1985-02 CHEVY/GMC: Astro/Safari van
1972-98 CHEVY/GMC: 2WD 1/2 ton pickups and vans
1992-99 CHEVY/GMC: Tahoe/Yukon
1973-78 FORD: Full size (Galaxie, T-Bird, LTD)
1958-69, 1973-79 LINCOLN: All except Versailles
1973-78 MERCURY: Cougar XR7, Meteor, Marauder, Marquis
1948-76 OLDSMOBILE: All except Cutlass, 442, F-85
1948-76 PONTIAC: All except Firebird, Trans Am, GTO, LeMans, Tempest, Grand Prix

Anyway, I found some wheels with good tires on a '78 Chevy 1/2 ton truck, and away I went.
I also ruined the spare tire rim on my '79 Lincoln Continental sedan this spring. I went and got a rim from a '90 Suburban and it's worked great. (I should try switching a Lincoln and a Buick wheel, just to see if they interchange...)

I hope this info will be useful, such as in parts car moving, or emergency wheel needs. I can't make any guarantees for the data, though, as I obviously can't try to fit all these different wheels on a Buick.

Best of luck,
-Johnny B.

[Three Tone]

My 55 has lug bolts (not nuts) when did Buick switch to a stud and nut set up?