Car dipping going under 50ks

[Pickled]

I'm not quite sure how I can explain this, but whenever I go under 50ks, the car will dip up and down, which almost feels like it has a slightly flat tyre, but all tyres are at their appropriate pressure levels?

Once I go past 50-60, it will ride normal and smooth, is this something to do with the suspension?

I also should note that I hit a speed bump doing about 40 when I first picked up the car (Sydney roads, poorly lit streets, missus etc).

 

[davey g-force]

Wheel balance...

 

[DeadxPatriot]

What tire pressures do you have your tires at? And yeah might be wheel alignment


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[Pickled]

Wheel balance...

3 separate wheel balances have been done in the past month, unless all 3 places did it wrong I doubt it will be that, but I'll get it checked none-the-less.

 

[stirringaxe]

Tyre Flat spot ? or Rim out of round ?

 

[Dawso 501]

How old are the tires? I know once I had the same problem after I got a flat and put a spare tire on. It did exactly what your saying yours does. Turns out the tire was old and the wire inside the rubber had let go and made a slight bump in the rubber

 

[Boonz]

I also should note that I hit a speed bump doing about 40 when I first picked up the car (Sydney roads, poorly lit streets, missus etc).

have you had a wheel alignment since?

 

[davey g-force]

Gee, a lot of Americans must frequent this forum.

In Australia, we have "tyres".

 

[Pickled]

The tyres are not even 5,000ks old, I'm pretty sure an alignment was done when my new rims/tyres were put on but I'll get it checked out, why would it cause it to dip though?

 

[Boonz]

cos it could be a bearing or rack end thats got freeplay. probably worth getting it checked out for peace of mind