So when I was out in a controlled envrionment I wanted to do a high speed run, however when I hit about 140-145 I heard what i thought were my tires rubbing on something. So i checked and saw no rubbing and tried it again.. same thing. It doesnt sound seious but its not a sound i want to hear going that fast..After I got home I checked all for corners, inner fender wells, suspension, tires and saw no signs off rubbing? Any and all advice would be greatly appreciated! TIA guys

 

Could be a couple things I guess. At that speed I would make sure your front undertray is secure it could be flapping around alot. How low are you or how soft of tires?? Because at that speed the tire does get a little taller

 

keep in mind you car will squat at that speed. What size tires are you running? Also, the above is right..your undertray is a flimsy p.o.s. at that speed and at that speed is probably flexing like crazy ( Beatrush FTW ). Sometimes at that speed you will get weird aerodynamic sound, kinda like when your driving with just the back windows down and get the chopper soundfx in the car. Could be a couple of things. Make sure your tires are all good PSI and check under your car for loose undertray pieces. Thats what comes to mind IMO

 

It's not your tires.. it's your mirrors vibrating. I wonder if that's why the FQ400 has the shrek mirrors.

 

Does it FEEL like its driving weird? If not, I wouldn't worry about it. It could be a million things at 140. Including everything listed above, and any other body part/panel vibrating. You think that's bad, try driving an S2000 w/ top down at 153... Talk about noisy.

 

Lol I know EXACTLY what you mean

 

im running 32 psi front and 29 in the rear with stock size tires, I will check the under tray and look for any other things that could be loose, And i dont think i actually felt it rubbing so i think ill check everything and try again. thanks guys If anyone else has any suggestions let me know