havent had the opportunity to measure exactly, but i snapped a few quick pictures. What size spacer would you think I need just by eyeballing these pictures to make the wheels sit nice n flush?

 

Looks like 7mm...However 10mm minimum is recommended to avoid vibrations and so that the wheel will have enough lip to sit on.

 

They look flush already to me since the edge of the rim is by the fender. It only looks non-flush because you're running a stretched tire.

 

Interesting. I think at the end of the summer, I will swap my 275 - 30 - 20 to 285 - 30 - 20

 

I would do a 5 mm spacer if you are not planning on rolling the fenders... If you are rolling, than you can go a lot more.... The e60 has a thick border on the inside which will cause rubbing if you put lets say 10mm on your current set up. If you go 285, it wont look more flush, but it will get you closer to the rubbing point..... I am rolling 285 and have 5mm spacers laying around, I will put them on next week. I´ll let you know if I experience rubbing afterwards...

 

I would highly advise against a 5mm spacer.

 

Really? Why? Is it because they are not hubcentric?

 

Because the lip on your hub is <10mm so if you use a 5mm your wheel is going to only sit on <5mm of lip

 

I understand.... so not recommendable...

 

I would say 12mm and get fenders rolled slightly. Also, make sure they put anti siege lubricant on or it will rust to your hub.