Looking at replacing the wheels on my ‘77 and can’t find the bolt pattern or backspacing. I know that the rim width is 6” and the wheels are 15”. Thanks in advance.

 

5-on-4.75 is the bolt pattern, so that's easy.

Can't remember the offset offhand. Others will.

Where you're likely to run into problem is the diameter of the center hole. It's an odd size and bigger than typical. I wanna say 2.85" or something like that. I'm pretty sure the info has been posted and is in the archives

Cheers
DD

 

Take a look here, most any Chevy rim from the 50's & 60's (on Impala's and Caprice's) into the 2000's (on Camaro) have the same bolt pattern (5-120.65mm), but the center hole on the Chevy wheel is 3.5mm smaller. Should be an easy job for a competent machine shop with a lathe. This site also gives all the rim widths and offsets.

https://www.wheel-size.com/

Dave

 

Yup! Once I bought some aftermarket wheels and the tire store I use had a regular working relationship with a machine shop just for the purpose of boring out center holes on oddball wheel/car combinations

Cheers
DD

 

it is the same GM pattern all the way to the XJ-40

 

I used E39 BMW 17X8 wheels on my series 3. As mentioned, the bolt pattern is 5X4.75 or 120.65mm. I believe the hub bore is ~73.8mm from Jaguar, and the E39 wheel has a 74mm center bore and worked great. The biggest issue with the front wheels is the size of the front hubs, they are crazy long. The wheels I used worked and concealed the giant hubs by modifying the inside of the center caps on the fronts. FYI, if you consider the BMW wheel route, note that the E39 is the only BMW with this hub bore size, the rest are 72.X (can't remember), so they won't work.