Ok so i live the look of my 19x8 maxima rims but I'm looking to get a more flush look juat not out past the fender. So I'm curious would a 25mm, 20mm or 15mm get me there? I think the maxima rims have a 50mm offset but not 100% but I want a more flush look

 

Grab a paperback book, piece of foam, or a stack of magazines and wrap it around your tire sidewall, when you get just the right thickness that you like, take a measurement of the thickness, and presto, that's the size you should get IMO that's better than recommending a particular spacer size since what you may consider perfect may not be what another would say.