Will wheel spacers mess up my car?

I came across this Z4 for sale too late to scoop it up, but I love its stance due to the wide rear tires that go all the way to the fender.

My Z4 has stock 225 width tires/rims but I'm wondering if it would hurt anything to mount some spacers behind it so they're pushed out a little. This is purely budget cosmetics; I have no desire to spend ACTUAL money on new wheels.

No, assuming two things: 

1: You have enough stud (or is it lug bolts with that one?) left over to actually attach the wheel to the car, and 

2: You're not rubbing. 

I run 2" spacers on the truck. Makes the wheels fit correctly and no issues to date 

There's also the potential for increased wheel bearing/hub wear. I have to run about 10mm of spacers on the race car but replace bearings every season. 

As long as they're hub-centric and you have enough wheel stud (although I guess in this case it would be enough wheel bolt) for proper thread engagement then you should be just fine. As enginenerd said, spacers/adapters may accelerate bearing wear but as long as you don't go for massive ones you should be relatively fine.

In reply to G_Body_Man :

On the rear pobably not.    It "could" affect the steering somewhat on the front.

In reply to iceracer :

Yeah, I remember Mike Kojima talking about how large spacers on the steering axle can cause some really funky handling.

It's not the spacer that causes steering changes or increased hub wear. it is moving the wheel centerline around relative to the stock wheel centerline that does that.

So, if you don't change your wheels but add spacers, you change the wheel centerline relative to stock. If you go from a wheel with 25 offset to a wheel with 45 offset and a 20mm spacer, you have changed nothing so you should see no steering or wear effects.

Thanks. And Robbie thanks for the explanation