How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Matt Your Own Question
Matt
Matt, Mechanical Engineer
Category: Vauxhall
Satisfied Customers: 22933
Experience:  BEng hons Mech engineering, in auto industry 22 years
12772297
Type Your Vauxhall Question Here...
Matt is online now

My 2012 Zafira has over the last couple of months developed

Customer Question

My 2012 Zafira has over the last couple of months developed a rotational low vrooooom,vroooom, vrooooooom noise that seems to be coming from the rear end. To start with it was intermittent but now it seems to be getting worse. It is there at low speed, coasting in neutral or under power, and appears to be in sync with road wheel (or drive shaft) revs. As you accelerate it seems to just become a constant road noise, I have had the car about 4 months and I am sure it was quieter in the cabin when I got it.The noise is accompanied (at low speed) by a little resonation, vibration this all disappears into general road noise as speed increases. There is whining or vibration at motorway speeds. My local ATS tyre centre say there is a little "scolloping" on the rear tyres and they are going to have a drive in it on Monday. I have jacked it up and can't feel any bearing play.
Submitted: 1 year ago.
Category: Vauxhall
Matt
Expert:  Matt replied 1 year ago.

hello

if the noise changes during cornering at all then its very likely to be a failing wheel bearing, if this noise doesn't change during cornering and there's no play in the wheel though then I'd agree that it could be the tyre wear , especially if the edge of the tread blocks are chamfered

Ask Your Own Car Question
Customer: replied 1 year ago.
Hi Matt
Have done more tests, the noise comes in at between 10 and 20 mph and disappears into general road noise at 30-40 mph. Have driven it in reverse, noise not detectable above gear noise. Have driven in full lock circles on both locks, there is no noise. I can feel some uneven wear on the inner tyre edges, tyres have done 22000 miles
Regards Peter
Expert:  Matt replied 1 year ago.

hello Peter

OK in that case then I'd suggest to check the condition of the rear brake disc for any uneven wear or sticking pads

and if you do suspect the pads then remove then, thoroughly clean out their sockets and apply some copper grease to the back and sides of the pad so they can move and retract freely

Ask Your Own Car Question