Phil Kangas wrote:
> Is the lug bolt pattern for a '03 Buick Century the same
> as the lug bolt pattern for a '05 Buick LaCrosse?
> The '03 has 15" wheels, the '05 has 16" wheels.
> I don't have access to the LaCrosse yet to measure it.
> My gut says no they won't fit but I'm asking anyway.
> phil k.

Google is good for looking up things like this.
Here is one of about 399,000 hits for the bolt pattern:
http://www.wheelsupport.com/bolt-pattern-list-5-x-115/
https://www.wheel-size.com
shows that both cars came with at least 16-17" wheels.
Century had 15"-18" wheels.