We ran some of those cheap OEM Mercedes W123 aluminum wheels I had laying around the shop on our first Lemons car, a Volvo 122. The 122 used a 5 x 4.5 (114.3mm) bolt pattern, and the W123 wheels seemed to fit OK...
Then, one day, we started breaking wheels. Couldn't figure out why...until I did some digging and found out that the W123 used a 5 x 112mm bolt pattern- 2.3 mm different than the Volvo. We went out and bought some American Racing "wagon wheels" and never had another problem.
TL;DR: make sure you have the right bolt pattern, and not one that's "really close".
Tunachuckers: 15 Years of Effluency
'08 - '10: 1966 Volvo 122, "Charlie"
'10 - '18: 1975 Ford LTD Landau --> 2018 - current: Converted into 1950 "Plymford"
'22 - current: 1967 Volvo 122, "Charlie ]["