E53 3.0d 2006 problems

[Cosmin 27]

Hello guys! I have two big problems with my 06' E53 3.0d auto 218hp :
1. When i'm driving between 30-80km/h i hear a strange noise from the back side like the wheels are getting blocked,like the tyres crawls on the road,but it's just for one second,If i take the the foot from the gas pedal it's disapear. I think it's more frequently on the hill,but it's happen also on the straight road. I checked with inpa/ista i have no errors,on the dash still no errors.
2. The second problem it's the running direction,the steering wheen it's standing straight but the car it's going to the right side,i made many times the aligniament,the tyres look good,i checked everything like arms bushes rods many new parts,new suspension,new wheel bearing,many many new parts and the running direction still go to the right side.
Any sugestions what to check more??