I have a 2nd Gen Sc430 from Japan. 2001. I purchased it with 102,000km and it now has 142,000km. Its been nothing but awesome until this point. However some problems began when I put new rims and tires on. So I took off the stock and put some 20 inch rims on. I recently popped a tire on my 20 inch rim. When I put the stocks back on there is a really bad shake when I get to 100km h. IT runs and drives perfect otherwise. Here is a list of work I completed in trying to figure out problem....

-Went through TWO SETS of other rims and tires, neither got rid of the bad shake.
-Obviously I balanced, and did alignment. Still nothing
-Ball joints and bushings were already okay, I replaced anyways. Still bad shake.
-Replaced rotors, pads and calipers all the way around.

I have spent 2-3k this summer alone on new rims and tires plus thousands on other work to get rid of this stupid shake. The rest of the suspension is mint. I'm a young father from Canada (23) I can't afford to keep throwing away money to figure out the problem. Lexus dealership even said everything is okay and suggested I put the stocks on to get rid of the shake. It didn't help. No it's not bent axle, or rack and pinion problem, or steering column. It sucks because I do lots of hwy driving and commuting. I have nowhere else to turn, if someone can help me or offer guidance i'd be forever grateful. I just want my baby to run like she normally does.

 

We’ve had many a discussion on this topic...please read this thread carefully....https://www.clublexus.com/forums/sc4...at-60-mph.html ESPECIALLY post #13 in the thread.

 

Sky,
Did you fix the shaking problem? Please share your result.

 

Yes, the friend above me posted a helpful thread which narrowed down the problem to hub centric rings. I had TSW rims, and AVIS rims. Both 19, and 20 inch. Hub centric rings couldn’t fit, there was too much of a gap. Tried some is350 rims too, and still didn’t feel right and had a shake. Just went back to stock. Wasn't worth the hassle. I live in Edmonton Alberta, two tire shops said people always complain about the ride with after market wheels. So yes the shaking stopped, I put the stocks back on so I’m happy about that.

 

I hear the frustration in your response....you might consider contacting these folks and see what they may offer as experts, especially in the area of custom rings.
https://www.uswheeladapters.com/hub-...izes%20Offered

 

What does not make sense to me is that you said you put the stock rims back on and this did not solve the problem.

 

Yes, I wondered the same thing.

 

I believe he stated the shaking DID stop after returning to the OEM wheels. If I read this correctly.

 

In the opening post, he said :”When I put the stocks back on there is a really bad shake when I get to 100km h”. That where the contradictory is.

 

Were they these rims? https://www.clublexus.com/forums/sc4...y-sc430-2.html