Ok so I've had a search around and can't find Jack

So going to uni yesterday my car decided that after about 20 minutes of driving (traffic) it wanted to make a horrible grinding / vibrating noise at 40mph. I know it was 40 'cus there was a speed camera so anyway I immediately stopped the "tunes" (music ), turned the climate control off and could hear and FEEL through the pedals, steering wheel and quite a lot of the car, this horrible grinding-ee vibrating-ee thing.

So at first I thought is my engine eating itself? has one of the front wheel bearings gone (suddenly) is the turbo actually canobalising itslef? what? but then turning my head I realised it may be from the back or just resonating through the chassis.

I knew not what it was but it stopped, randomly after about 10-15 seconds.
I considered the road surface. but it didn't do it this morning so ruled that out. On the way to uni this morning the car ran like a dream and then a spirited drive home (alongside a mate in his corsa) NOT breaking the speed limit before anyone moans on a different road i was doing 70 and as i was slowing to about 40-30 just before i pressed the brakes, and I am sure I hadn't pressed the breaks, and the damn grinding noise happens again.
this has really started to worry me now. am I being paranoid and it may just be a dodgey wheel bearing? are these covered in garage 3 month warranties?
I thought it may be the turb. not owning a turbo'd car before I decided to slow down then gently floor it so the turbo kicks in, it spools up nicely and pulls well, with only a slight vibration (negligible)

Any help please??? going hopefully check the wheel bearings tomorrow but thought someone may have had similar problems

cheers
regards
Adam

Check discs and pads for wear/seized pistons/warped discs. Lift car up and grab each wheel to feel for excessive play and spin to see if there's grinding coming from one of the wheels. Also check drive shafts for excessive play in there. Just my 2 cents.

To check to see if it's engine related, knock it off briefly while driving (but obviously this will have to be on a very very quiet road and have quite a bit of length to it). Also try driving at 40mph with different engine RPM's to see if RPM's affect it and not speed.

okie pokie. After work I decided to go diagnose the problem got my dad to drive as he once was a trained mechanic and engineer XD Turns out my brakes are being told to come on... randomley :| NOT GOOD. sometimes the car will roll down a slight gradient, sometimes it sits there with one of the brakes on :/ you can feel it slow down when coasting. feeling the alloys after the road test it's the front left thats hotter than all the others. what could cause this? EBD malfunction, ABS, ASR Hill Holder? everything works fine and no warning lights on dash. its just the damn brakes are coming on SLIGHTLY when driving. this is completely random and causes one hell of a vibration and noise throughout the car. this is dangerous now :/ Anyone else experienced this?
Got to ring woodliegh up tomorrow and ask for it to be fixed under warranty as I've only had it two months. 100 mile round trip :/
any info much appreciated
regards
Adam

just come back from woodleigh in a courtesy car :/ the engineer guys say one of the calipers is seizing... even though both were off the car :s . a caliper sticking cant cause the feeling of abs attacking one wheel whilst driving can it. unless the discs are warped but then surely it would do it all the time. :/
majorly confused. am thinking it's probably a major electrical fault in the abs or ebd or whatever, yano, with it being italian and all :/

Adam

appears to be fixed Woodliegh have cleaned the calipers, new pads and cleaned the inside of the alloys as well the car actually goes like stink now too, yano with the breakes not been on most of the time an all