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[ehoffman]

I have an E92 2009 335i Coupe. It has the sports package and staggered tires and wheels.

Current Setup:
225/35/r19
255/30/r19

Wheels: Style #230
19x8 37 Offset
19x9 39 Offset

For economic reasons, I would like to go to a square setup to be able to rotate my tires and wear them at an even rate and/or extend the life as well.

Regarding rotation, how difficult is it to find tires that are not directional so I can do a full tire rotation? (as opposed to just front to back)
Even if I just rotate front to back, my tires will at least wear evenly so I can replace all 4 instead of 2 at a time, as my rears currently wear twice as long as my fronts.

My potential square setup:
245/40/r18 all around or
245/35/r18 all around
Thoughts?

Wheels:
I'm looking at Beyern Spartan, 18.5 width all around.

1. Will these wheel and tire combinations fit under the front and rear fenders with no rubbing at all? I would not like to do any custom spacers, suspension modifications, etc.

2. The Beyern Spartan have 30 offset and 40 offset options, which would you recommend?

Thanks!

[MassBimmer]

30 offset will look better and won't require any fender work. Go with a 235/40/18 or 245/40/18. A 35 aspect ratio is too small

[ehoffman]

Considering my standard offsets on the 19s (closer to 40), why would you recommend 30 over 40 for the 18s?