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Matt
Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 21623
Experience:  BEng hons Mech engineering, in auto industry 22 years
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My L/R Freelander Sport 06 Reg. 89k. has developed a road

Resolved Question:

My L/R Freelander Sport 06 Reg. 89k. has developed a road noise that sounds as if the tyres are giving a "wap wap wap" on certain road surfaces. I am running on 18" Continental 4x4 tyres. My mechanic say it is nothing mechanical and continental have refused to take a test drive and offer only mechanical solutions?. Any idea where the problem might be?
Peter
Submitted: 9 months ago.
Category: Car
Expert:  Matt replied 9 months ago.

Hello

off-road tyres will generate all sorts of road roar and tyre noise

its well worth trying a bit more tyre pressure to see if this alleviates the issue, just a few psi over the recommended maximum

and its also worth getting the suspension set up on a 4 wheel alignment jig

As most places use the back wheels as a datum and assume that they are perfectly straight and true. Often this is not the case and many modern cars are now adjustable at the rear as well as the front.

A 4 wheel alignment measures all four wheels independently and each is set -up without referring to each other.

Customer: replied 9 months ago.
Ok. I am running at 34psi already. (18inch wheels) The 4 wheel jig alignment was discussed with the tyre specialist earlier in the year and felt not needed. perhaps time for another discussion??
Cheers Peter
Expert:  Matt replied 9 months ago.

hello Peter

I'd agree its worth going back as it may be worth experimenting with a little less rear toe as this will help reduce tyre roar

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