Steering Shake Above 90Kmh

[Midnight34]

Hi

im wondering if anyone has any idea what the problem may be when my steering wheel shakes badly when i drive over 90kmh. This only happens when i have my aftermarket wheels on the car which are 18/235/40s.... when i got my stockies on i have no issues at all... ive had it balanced and aligned, and this didnt help. Im thinking it has iether to do with the tyres( which in IMO are terrible) or 1 or more wheels are slightly buckled

anyone got any ideas?

cheers

[KiwiRS4T]

Tyres can do that can you swap front to rear to see if it changes?

[eightsixboy]

Are you running spacers?

If so chuck them in the bin.

If not its prob tyres or a rim, more then likely a tyre especially if you say there not great tyres.

Do the wheels fit the hubs correctly? You will need hub spacers if they dont, otherwise your wheel studs are taking all the load instead of the hub. The alluminium ones are like $30 of ebay.

Theres so many things that can cause a vibration, flat spots, inproperly balanced wheels, no hub rings, buckled wheel etc.

[Hanaldo]

Could be a number of things. Do you have hub-centric locators? If not, make sure that when the wheel nuts are done up, you do them up diagonally. So do one up, then do the one opposite, and so on.

Or if the tyres are quite old or poor, then another possibility is tyre location. Take it to a wheel or suspension workshop that knows how to do a thorough wheel balance. They will have a machine that can tell them whether the tyre is in it's most suitable location on the rim. If it's not then they can rotate the tyre to it's best location.

[rondofj]

Wheel balancing - get ur wheels balanced at a tyre shop - dont cost much

[zoidbergmerc]

Wheel balancing - get ur wheels balanced at a tyre shop - dont cost much

Do this and report back. one of the weights could have come off.

[Midnight34]

thanks for all the input.. i did take to to a mechanic, he said there are a few reasons, wheel or wheels most likely buckled and also damaged cv joint boots... i dont have spacers on there or anything like that... but i think that may be the real issue at hand...