I get some vibration around 80mph but gradually disappears if you go faster. (no plans to cruise on 90)

I'm planning on having my wheels balanced but most shops says they're good for 65-70mph or the limit.

Any shops that can take on this issue? Balance wheels to take away vibrations at 80?

The reason I'm asking is, realistically, 80 is the 65 down here in Irvine.

 

Likely an alignment issue or worn suspension parts.

 

I agree, if it was a balancing issue, it would only get worse the fast you go. 80 in Irvine, dude you are freakin wack! If you need to get a balance, get a dynamic balance which destorys the single weight balancing. I have a hook-up at Mountain View tires in Santa Ana/Tustin that'll do a bomb job.

 

Can you suggest any shops here in the OC to take care of that?

 

either alignment, or if your running aftermarket wheels might be missing hub centric rings

 

Get that checked out InZpire it could be something bad................