HELP!!!!I have a 2004 350z and i put 19" rims (racing hart cr multipiece 19X9 front 19x10 rear) (245/35/19 front & 275/35/19 rear). My car now wobbles at speeds over 60mph! When i hit a bump on the highway it wobbles and when i take turns at high speed also! Do i need springs??? Suspension?? please advise me.

 

hubcentric rings? you might need those...

 

what is that???

 

rings that ensure a tight fit of the rims on the hubs. Definitely sounds like a fitment issue, no springs or suspension components needed just for changing wheels. Honestly, I'd get the wheels off right away and have a look !

 

Thank you very much i will check that!!! Where do i get those? At a rim shop? At nissan? I live in Greece and i would have to find out what exactly they are in Greek and tell them what to do. Appreciate your time

 

The rings should have come with the wheels if required, some like Nismos, don't have them! I'm not sure about the Racing Harts. If you need them, one of the vendors on this forum will help you out.
If you remove the nuts and hold the rim against the hub, there should be no sideways movement, should be quite a tight fit. How far is the tyre shop from you? Drive very slowly and get them to check it out! I take it you've done the basics, like check all nuts are actually tight?!

 

Did the wheels get balanced before they were put on?

 

Yes. It doesnt wobble unless i hit a bump or take a turn at high speed

 

definitely the hub ring. Its a black plastic ring that goes in between the hub and the wheel. I had the same issue.

 

i found the hub rings on ebay, i forgot the inner and outer dimensions for them though. Maybe someone here knows.