Repost from Wheel+Tires, Noise problem, plz help!
 

Hi, i just installed E430 17x7.5 ET37 rims on my W124 4Matic...looks great, good clearrance but the only problem is when i drive up to 20mph a annoying sound from tires start...u can hear the tires rotating...this sound stops around 25 mph and begins again around 40 regardless of pavement...then stop about nother 10mph higher.... the noise is like a brrrrr with almost a thump..it goes brrrrrrr brrrrrr brrrrrr...wut is the reason for this?? Is it harming my braking system??? should i remove these rims and put back my stock ones??? plz help!!!
Btw the tires are 235/45 Pirrelli P7000 Supersport tires... front ones have 25k+ miles on them....rear ones are new with only about 5k each...(bad tire balancing??)