I have Exel 17" rims wrapped in toyo fz4 tires. The ******* car shakes at 80 and above (atleat up to 100, thats where i stopped). It feels likea balencing problem but at that speed that should not matter, all vibratinos should go away. Anyone have any ideas... Bend rim?

And i do have the hub centric rings on the wheels.

 

Um.. at higher speed a vibration is going to be aggravated, not diminished.
Your tires may not be properly balanced, or it could be an alignment problem. I would definitely get it checked out as it could be very dangerous.
My friend has a lowered GS-T, and one rear wheel has worse camber than the other. It starts to vibrate around 70mph.

 

just got alignment done, so its not that...

 

take it back to the shop and ask them.. since you had work done there it should be a free inspection...

 

Ive seen that happen with a lot of aftermarket rims/tires. I went through the entire thing, I think it comes down to aftermarket wheels being harder to balance or something, I had a few sets of rims then got my SI OEM rims with kuhmos and all of a sudden, super stable .

 

wierd.. I've had stock GSR rims, 5Zigen wheels, SSR, and have borrowed/traded (my friend borrowed my SSR's.. I borrowed his Volks for a month)... and have never experienced this before...

 

aaaaaahhhhhhhhhhhhhhhhhhhhhhh

 

Just because you got an alignment done doesn't really mean it's good.. The dude that did it might of just set it to the preferred setting. I'd bring it back and ask to see if they actually did the alignment according to spec and not in the preferred range. But that's what I would do..

But you have to remember, some rim and tire combos aren't going to run right on every car..

 

I'd love to hear your reasoning for that one. Go get your wheels re-balanced and see what happens.

 

Just from what a million people said when you get up to speeds over that. Mainly talking about balancing...

 

i had the same problem.. the car would shake over 60 mph.. when i got new tires and balanced them, poof it was gone

 

same here.. i got new tires and balanced and rite after it was gone

 

It may be uneven tire wear. Check your tires if you already got your wheels balanced and aligned.

 

visually inspect tires (check your weights...could've lost one)
check tire pressures
balance (ask them to balance to higher speed) ...
alignment
then start troubleshooting ps (but do above first).

 

Make sure the tires are rotating the right way...The tire should have something on it that says ROTATION> meaning the arrow next to ROTATION should face the front of the car...

 

as dumb as this sounds, it happened to me. balancing is HUGE though. if it isnt on PERFECT, it will shake you at high speeds, especially when you let go of the gas.

 

also,
check tire wear

 

also, check your CV joint and see if it is having problem. This can be a cause.