Hi all,

Quick question. Ever since buying my STI i've noticed what sounds like a groaning noise at high speed (100km/h and above - it is most apparent on the freeway) It appears to come from underneath the car... but its far too hard to tell for sure, and I cant exactly hop out while doing 100km/h and have a quick peek

Has anybody experienced this before? It sounds A LOT like the well known "diff noise phenomenon", For those who don't know after doing a fair bit of research it seems the 07 STIs are well known for making a groaning type noise when on full lock in a low gear or reverse. Which is fixed by switching the diff controller to low lock (or something along those lines, I'm not in my car so can't check for 100% accuracy) but this doesn't fix the noise i'm getting at speed.

Its starting to really get on my nerves so any advice will be appreciated.

(07 STI, Less than 60,000km, No mods)

Cheers.