Originally Posted by crystalworks

Don't recall someone doing 21's on the e53. See them from time to time on the e70 as it was an available option on those.

I went wider tires on my aftermarket 20's... and wanted to keep more sidewall than 21's would allow. 285/40 up front and 325/35 out back. Also running 15mm spacer in the rear for an effective rear offset of +9. Semi custom wheels so lowest offset I could get was 24mm. Result.