This is assuming you're on the original wheels, not aftermarkets.

Rolling the fender or changing the suspension is a band-aid solution. Something about your rear end is badly misaligned. Take it to a good shop and have them find out why the wheel is so far out of position.

You're putting almost 300 hp to the ground through that rear end. If something's wrong, you need to know about it before it gets dangerous.

Cheers,
Frederic

 

this

 

do u have pics?

 

You need to provide more info. Stock wheels? Wheel diameter tire brand model & size? 9.5 wide? - tread width or section width. Example I have Conti DW 275/30/19 that are on stock 313 19 inch rims. Rubber has a tread width 10.6 & section width 10.9 & does not rub.

If you have stock wheels you have a suspension problem. If you have aftermarket wheels you have the wrong backspacing.

 

2009 335i with BMS 15mm spacers front and rear. (18mms were too big but I have them left over and selling for $60.00 if you know anyone that wants them). Had the fenders rolled by a kid for $60.00 and can hit the biggest dips with no rub. Had to do it 3 times before it stopped rubbing. Was cutting tire at the back corner of the fender. Stock size run-flats on the car.

 

So you have stock wheels and tires, but have spaced the wheels 15mm out?

Do the tires rub when you take the spacers out?

The obvious solution is to get rid of the spacers. If you must have them, take them to a machine shop and have them turned down to 10mm.

Frederic