Did my first day at castle Combe today.. What a blast ! Epic fun and the car ran sweet until the last session.. Towards the end of the session I was getting this thudding noise from the front left when turning in to right hand bends. It was alarming enough for me to stop the session. Anyone had this before ? I checked wheels nuts and they were fine, my friend said its most likely the brakes but it wasn't any more when on the brakes just mainly during a corner. What a pain.. Any help or comments appreciated ! Sent from my iPhone using Tapatalk
Have a look round the tyre and inside the wheel. Its amazing what an effect either a flat spot or rubber pickup can have, happened to me in the past whereby the car ends up feeling liking the wheels are unbalanced, loads of odd low frequency noise etc. but just a bit of driving then clears it up. What has it been like since and do you get anything similar honking it round roundabouts? Front left tyre takes a caning at Combe.
Thank for that. I checked around the tyres and wheels and everything is clear. It actually seems to happen from both sides which I figured out on the way home, going up hill round a corner also makes it more noticeable but to feel it you need to be on relatively smooth Tarmac. Yeah it is like a massively unbalanced wheel on turn in is what I can describe it as or like the feeling of a seriously warped disc during a corner.
You could have picked up debris on the tyres. It's happened to me before and I couldn't get the lumps of melted rubber off. A real pain. Sent from my E6653 using Tapatalk
I'm going to jack the car up tomorrow and check it out. As it does it when cornering both ways surely both outer joints couldn't have gone at once ?! Is it possible that it could be brake related ?
Doubt it, you'd have been off the brake at turn in? Weird it happens both ways, let us know once you've had the chance to have a look, I have had a similar thing, it was rubber pick up, went on the drive home
If you spot loads of rubber pick up then you can remove it using a heat gun with a scraper attachment fitted. Also check for play by jacking it up and rocking the wheel about. I doubt it's a CV joint. Sounds more wheel/tyre/wheel bearing ...
Some fast cross country driving and chucking the thing at a few roundabouts will almost certainly get any rubber pickup off the tyres. Heat scraping is the perfect way but a real time consuming PITA to do and was one of those yet another things that put me off racing on slicks.
It will even wear off slowly with time post track. When it comes off in strips on the road the noise is short lived as it shreds off the tyre, not constant and not just associated with turning. OP, If your problem is constantly repeatable and not a permanent serious tyre issue, look elsewhere.
Jack it up. Put one hand on top of the wheel one hand on the bottom give it a good push /pull with each hand. Watch the bottom pivot joint on the hub. I think this is likely worn out. Mine uses to make all sorts of klunks and squeaks. Also used to feel it on turn in and hard acceleration. If you've hit a few inside corner bump strips fairly hard this could have just tipped them over the edge. Sent from my GT-I9505 using Tapatalk
Sounds like your balljoint. Same problems as I had. Felt like a bit of torque steer on acceleration too.
Thanks for the replies guys. I think I did still have a bit of rubber pick up left on tyres as it seems to have calmed down a bit now but it still feels different to before so I will be jacking it up tomorrow and giving things a wiggle about to look for play. Will report back with any findings Sent from my iPhone using Tapatalk
As Steve said, if you drove it hard enough it will never really feel the same now as its likely you have put enough wear on the tyres in a way they never get on the public road, and hence it will always feel a bit different + of course now you are used to the speed and feel of mega g it will just feel slow and less sharp on the road at road tyre temperatures (like the car has magically got 200 Kg heavier all of a sudden). On my Meg I have only had it on track once but came home with about 1mm less tread on the outside 1/3rd of the front tyres. Its perhaps the biggest downside to track driving, it makes driving fast on public roads feel very tame and a bit boring by comparison.
