I own a 2008 528i and did not get the sport option. I would like to upgrade the stock 17" rims to 20" rims and was able to get 4 rims/tires that orginally are for the 7 series. The rims are BMW 7 series rims - M class Cross Spoke 20". The front tires are 245/40 and the rear tires are 275/35. I am not sure if these rims/tires would fit my 528i. I would appreciate any advise on what tires I should buy and will there be any problems if install these rims on my 528i. thanks

 

Do some studying first G ME 5,

Have you done the Search on this site?

Are your roads good enough for 20 inchers?

Do you even know what you're doing and why?

 

are you planning to lower your vehicle as well?

 

wheels sizes and offsets are fine (you could even use some little spacers to make them sit nicer in the front (5mm), but not necessary)

Your biggest problem is that the tire sizes are wrong. Much too high aspect ration.
This wheel tire combo will be 2 inch more in diameter than a standard E60 wheel.

If you fit the correct tires, they'll be fine

 

The roads that I use are good enough for 20", And I have done some research. I just want to get some help from people with first hand knowledge about the E60. I love the way these rims look and would love to see them on my car.

 

I am not planning to lower the car. Will there be a need for it?

 

Any recommendations on tire sizes?

 

YES THEY WILL, i have a set of 20s with 285/35 zrs

 

G ME 5, the most common tire size for 20x9 and 20x10 wheels for the E60 is 245/35/20 and 275/30/20.

 

I used the same sizes on mine, although these are already 1" oversized, but that is acceptable. Just be aware with this size your speedo will run nearly exactly true, so no more overreading safety margin.
100% correct conversion on tyre size would be 245/30/20 front (or 255/30/20) and 285/25/20 rear (or 295/25/20)
Nevertheless, these sizes look like painted rim edges in terms of rubber on the wheel and are pretty harsh. With the 24 offsets on the rear, neither the 285, nor the 295 should catch on the arches, although the 295 will be very close