I recently purchased 16x8 rims, with a backspace of 5x4.5. THEY WILL NOT FIT ON MY STANG! Even with a spacer, they rub against the brake caliper--what's going on?
I have a 2004 V6. Shouldn't they fit?

 

what kind of rims isnt 5x4.5 the lug pattern

 

What offset is the wheel?

For example, we sell a 16 x 8 wheel with a backspacing of 5.51" and an offset of 25mm

 

I don't know what the offset is (I'm currently a buffoon, when it comes to cars, which I hope to change). My new rims fit in the back, but not in the front. The company that I ordered them from sent me spacers, but they weren't thick enough, so they're sending more. How safe are spacers? By how much should they clear the caliper? If I have them on the front, should I put them on the back to ensure symmetry?

Thanks

 

Honestly, I think spacers are generally a bad idea.

Sometimes they are needed but they should not be used to make a wheel fit that really shouldn't