boomy noise

[Andy76]

Probably not the best description but around 45-50 mph I get a boomy noise. It comes from rear of car, almost like its coming from in the boot.

Its always at same speed when cruising, gear/revs and road surface make no difference, tyre tread is good (Bridgestones on standard Gti alloys).

If it was an older car i would suspect a wheel bearing but not sure if this noise is just a common thing/feature of a golf. Are wheel bearings prone to failure?

It needs to go back to dealer in coming weeks but after a month of ownership its a feature that is becoming a real annoyance. Would appreciate any thoughts

ps- its definitely not the stereo! 

[Jimble]

Tis a common problem with the mk5 and 6, it's caused by uneven wear on the inside of the rear tyres, also known as sawtooth effect or feathering, it's due to incorrect allignment sometimes from the factory but can also be caused by bumps curbs etc tends to get worse as the tyres get older, mines getting it a little now with 15k miles on the rears.


Like this:


[font=.HelveticaNeueUI]http://www.pistonheads.com/gassing/topic.asp?h=28&t=1242766&mid=0&nmt=Golf+Mk5+rear+tyre+%22saw-tooth%22+wear%2Fnoise[/font]

[ajmoir36]

Tis a common problem with the mk5 and 6, it's caused by uneven wear on the inside of the rear tyres, also known as sawtooth effect or feathering, it's due to incorrect allignment sometimes from the factory but can also be caused by bumps curbs etc tends to get worse as the tyres get older, mines getting it a little now with 15k miles on the rears.


Like this:


[font=.HelveticaNeueUI]http://www.pistonheads.com/gassing/topic.asp?h=28&t=1242766&mid=0&nmt=Golf+Mk5+rear+tyre+%22saw-tooth%22+wear%2Fnoise[/font]

+1 Tyres.

[Andy76]

Ok i will have a closer look at the tyres. Its at about 18.5k

I will mention it when it goes in in a week or two for some warranty work, given i've only had it a month the dealer may be helpful

cheers

[Jimble]

I was quoted £49 for a 4 wheel alignment at the dealers, might be worth asking?

[Hartside]

Is the alignment on the back wheels adjustable on the GTI?

[ajmoir36]

I was quoted £49 for a 4 wheel alignment at the dealers, might be worth asking?

Bargain they wanted a £100 off me I refused.

[Andy76]

I will probably mention to them and let them diagnose it, dependant on the outcome I will push for them to correct it given I have only had the car for a short time.

Will report back in a week or two

[Booth11]

I was quoted £49 for a 4 wheel alignment at the dealers, might be worth asking?

Bargain they wanted a £100 off me I refused.

That's a big difference in cost.  I'm considering getting my wheels aligned, potholes round here are abysmal and pretty sure they've taken their toll on the wheels over the winter.  Wonder what price my local dealer will pluck out of the air, and what exactly are you getting for the money? 

[Raffe]

Had mine carried out on a Hunter 4 wheel laser alignment machine for £65, £100 sounds expensive.