Bought the Powertrix 20 mm hubcentric bolt on wheel spacers, installed last night but didnt have time to do a shakedown run. Wife took the coupe to work today. She sent me a text saying there is a vibration at 70 mph. Sucks. I'll drive it when she gets home and see what kind of vibe it is and then i'll start pulling wheels off.

with the bolt on 20mm spacers it still left a little bit of stud and nut sticking out from the spacer. It appeared the wheels (2012 Sport 19s)had enough cut out in the backs to clear the nut and stud. Anyone run into the issue of the exposed stud hitting the wheel and keeping it from seating properly on the spacer?

any advice?

 

throw away those cheap spacers and buy some h&r hubcentric ones for the g. yes it costs more but with a proper installation absolutely no vibrations. personally tested upto 265kmph at the track

 

you can get a set of H&R hubcentric spacers for around $200 from FBPARTS on here its the best price ive seen anywhere.

 

i test drove it - very slight vibration between 70 and 75 mph. I took off the front wheels and tightened every thing back up. I went up to 95ft/lbs on my Harbor Freight torque wrench. Test drove it again and the vibration is even less and only right at 70 mph. Took it home and retightened everything on the rear now. Hopefully that will get rid of that slight vibe.

 

throw those away before your wheel bearings go....get the H&R and you'll have no issues. I've been running them 20 MM on front and back for about 3 month without the slightest vibrations since day one, personally tested up to 120MPH....

 

hit up charles from powertrix. he's a standup guy and will take care of you
i got their coils and its pretty legit. powertrix is very very reputable in the z32 scene btw. just cuz they got a shotty website doesnt mean their stuff is bad

 

theres a wire mod you can do to get rid of the shaking