[mark_wildman86]

Morning All,

Im in need of some help!!

Ive just had two new fron tyres put on my motor. When the old ones came off the inner part were heavily worn which the garage said is an indication that the top part of the suspension is worn as this is a common fault on the 156 model-

Any how the new tyres are on but now have a knocking noise on right lock and occasionly when in a straight line- Im due to get it checked with regards to the suspension but why would new tyres cause this noise?

Can anyone give me any indication- Will the new tyres have moved the suspension? Which parts of the suspension are prone to go on the 156? Any help or pointers are helpful

 

[satanism]

if the noise is constant and increasing with speed i'd check if the balance weights are not catching the brake caliper

 

[mark_wildman86]

It is consistant with the whell going round yes, I didnt even think about the balancing weights catching!! Ill nip it back in to get them to check. It definately increases with speed and is only on a right hand turn/lock

 

[satanism]

well i'd say its almost surely the balance wheight...

 

[chuddster]

i had a similar experience found out the drive shaft had worn car had only done 22k same noise as you said but experienced a slight vibration when coasting on motorway which made me think of wheel balancing. luckily still had warranty

 

[Artermis]

if the inside of the tyre is worn far greater than the outside edge then you need to get the wheel alignment checked out.

if the suspension arms have ever been replaced and the alignment not checked then it will almost certainly be out.

the suspension arms are a weak point on 156/147/GT design. if they are squeaking the top arms are likely shot, although you can try greasing to prolong their life. if they are rattling / knocking then the bottoms are shot at.

if you replace any of these get alignment checked.

also check the wheel bolts are tight.

 

[Guest]

I concur... Many tyre centres often put wheel balance weights on the inner bead edge of the wheel or the edge of the alloy with stick on adhesive weights on flat surface of the inner wheel. They can catch the caliper and even worse case scenario catch and wear away the rubber of the flexible brake pipes on some models of cars! Leading to a burst and brake failure....
I don't want to scare you but I have seen this happen many times.

Get it checked right away, just in case.

Ask them to re-balance the wheel and place the weights safely away from the caliper, prefereable against the inner spokes etc.... Trust me, they can do it and it WILL BE FREE OF CHARGE as it is their lack of care and attention!
Get the car booked in for wheel alignment AKA "tracking" ITS ALSO FREE TO CHECK IF IT'S OUT OF ALIGNMENT AND ONLY CHARGED FOR IF ADJUSTMENT OF THE TRACK RODS IS REQUIRED usually £25.00 maximum.

Upper arm bushes can't do that much wear to a tyre AKA camber which is what they are assuming, but your wheels would look like this as you are looking from the front of the car
/ \ for that to happen!
worn bottom wishbone arms can but if no knocking was apparent before hand it's highly unlikely.
Maybe the previous owner had them replaced but neglected to get the tracking done afterwards. Thus the excessive inner tyre wear.

 

[davealfa11]

IMHO from my experience worn top mounts alter your caster angle ,so if its out of limits on wheel alignment ...............

 

[Eskay]

I'd also check your wheel bearings if you are getting a 'knocking noise. I experienced what I would call a knocking noise coming from my front left tyre. Turned out that the wheel bearing was completely worn out/shattered.

To check for this it's best to park on a flat surface if you can, then go around to each of your wheels and try rock them in and out. if there is any sideways movement/looseness in the wheel it's a pretty good indication that your wheel bearing is no good.

Good luck.

 

[AutobotVanguard]

When I test drove my recently purchased 156 JTD Sport, I noticed a knocking on the front left side suspension when moving, especially at lower speeds. It was identified by the garage as a suspension link problem and sorted prior to purchase. The rubber suspension bushes tend to perish which leaves the joints loose with metal knocking on metal (ask a mechanic, I'm just passing on information here). You can buy replacement parts or upgrade them to polyurethane Powerflex items which will last indefinitely.

Regards
Nick