sounds like a flat but it isn't - 2006 156

clsport · September 14, 2016, 07:27:36 PM

I just got my car back from the mechanic today after an 80,000km service and I had the tyres rotated. Now i have a thudding sound front the front left wheel. it sounds like a flat but the tyre is fine. It causing the dash to vibrate slightly. The tyres are due to be changed soon but i've never had this problem before. The tyres are 7" and 8" wide. (mechanic rotated last time and didn't realise the widths). The air pressure is fine.

Any ideas?!

Mick A · September 14, 2016, 08:45:59 PM

Yes the tyre will have a flat spot most likely.

Time for new tyres!

Mick.

clsport · September 15, 2016, 07:48:02 AM

Quote from: Mick A on September 14, 2016, 08:45:59 PM
Yes the tyre will have a flat spot most likely.

Time for new tyres!

Mick.

I've put the spare on (a space saver) and i can still hear something from the left side.

Neil Choi · September 15, 2016, 08:27:56 AM

Wheel bearings? But you just had the car serviced, so maybe not.

Or put it back to what you had, ie probably rear back to front and see.

MD · September 15, 2016, 05:28:19 PM

Is the front left tyre delaminating? This will show as a small (or large) bubble in the tread area. Sort of opposite to what Mick has diagnosed with which I agree with also as a possibility.

Colin Edwards · September 15, 2016, 10:10:16 PM

Engine undertray loose and flapping in the breeze?
I'd take it back to your mechanic.

bazzbazz · September 16, 2016, 06:53:13 AM

Ok, I know you said it was coming from the left front, and you swapped the left front for the emergency spare, so we know it has nothing to do with the left front tyre/wheel.

It could be one of the other tyres however as at times it can be very deceiving.

Now this is the ultimate at long distance psychic auto maintenance, and just taking a random swipe at causation, but have you driven over any road works lately, where they have been laying down fresh Tar? If so, check ALL tyres on the car and see if you have a lump of tar stuck to a wheel some where. When road works were being done in our area and they were resurfacing both my sons car and mine came down with what we both initially thought were de-bonding tyres, in the same 2 week period.

Now if it were to turn out I am ridiculously right, how many lotto tickets do you reckon I should go and buy?

Baz