Would 18x8 rims with p225/45/r18 tires fit on my stock 2008 Honda Civic?

Found a great deal on some rims with tires and needed to know if they would fit for sure. They were previously on an 04 bmw 325i

18x8 rims are fine for your Civic as long as they have a 5-114 bolt pattern and a 50mm offset. However, the rims off the BMW 325i will not work for you because they have 5-120 bolt pattern. They will simply not fit your Honda.

Once you do find some 18' rims with the proper specs you need to be looking for 215/40-18 sized tires as well.

Only if they for your Honda civic and ok for tier size to go little above the number recommd for your tier.

I'd suggest better wheel bearings and shocks if you do.