Bmw 525i and bmw 325i?

Question

do they both have the same radiator?

Answer 1

my bmw is a 325i 2001 and it has a wierd noise at the rear of the car like it happens when i push on the brakes?

Answer 2

they are both the same, the 325 and the 525 have the same exact engines, 3 series is just smaller and the 5 series is more of a touring sedan. but remember the vehicles cant be more than 5 years of age apart.