Okay I know there isnanton of topics about this. But I have an 07 530i and I just got a set of 166 staggard 19's I need help with tire size for the front and rear. I want the nice aggressive look
But not rolling fenders or rubbing. Just want a clean aggressive look. And will I need spacers to give me that look? Thanks

 

245/35 Front
275/30 Rear
12-15 mm Spacers on rear (assuming you have the M5 ET28 Rear Size alloys.

 

Okay thanks so far that's the size I been getting. Now when you say M5 Et28 do you mean that they are genuine factory wheels? If so yes They are. Thanks

 

I am running 245/35/19's up front and 295/30/19's out back. No rub at all and oh so fat in the back. Looks nice.I could do a 5-8mm spacer in the back, but just haven't wanted to mess with really.

 

166's come in a M5 version and a M6 version.
If yours are factory M5 version then they will be et28 rear which needs 12-15mm spacers to look great with 275/30 tyres which is the recommended size for Non-M5 Staggered.
The 166's in the factory M6 version have a rear et17.

 

9.5 inch rear 285/30 minimum width ratio.Spacers arn't needed they're optional. And if your going to do spacers put them in the front for better turning

 

Okay now I'm lost. Any pics of how you guys are sitting? That's the first I heard of spacers on front.

 

Can you post or send me a pic of your rear tires? I want that 'oh so fat' look in the rear as well. Currently i am running 275/30/19 with h&r lowering springs and there is so much gap. Im thinking either 275/35/19 or 295/30/19 will help fill it out nicely.

epilithic@gmail.com

 

Here's a 285/35 on the back, 245/40 on the front for some extra rim protection..., this is on an 06' 530 with Stock Sport suspension

 

looks siick! Unfortunately i wont be able to use 285/35, i have h&r lowering springs. i might be able to get away with 285/30 though.