Nearside Grumbling

[mi16nut 0]

I seem to have a grumbling coming from my front wheel arch area, only really noticeable when pushing on. During sessions at Cadwell last week it appeared to be getting louder & I swear I could feel some roughness under my feet when sitting in the passenger seat; not something I do normally. There isn't any knocking at full lock & when on track it seems to start in corners but extends down the straight too. I drove on 2 sets of wheels & it was no different.

 

I guess the suspects are driveshaft (although it is a GKN one that has done @ 6k miles only) or could it be wheel bearing? As said it's not really noticeable on the road, but it has been present since early July when i first noticed at Donington.

 

The car is running 309 shafts/ wishbones & a Quaife ATB.

 

Any thoughts would be gratefully received.

 

Mark.

[Stu 18]

Strangley enough ive got the exact same problem, the bearing isnt noisy, but when the nearside wheel is loaded in a bend its got a rough rumble to it with some vibration through the floor pan, so id be interested to see what you find, my money was on a wheel bearing but i havent had chance to check yet.

 

Sorry for the hijack!

[McPikie 0]

Could be the unloaded CV coming through

 

Or the diff?

[Dan Ingram 1]

I'd go for the CV joint. I've had the problem before. You could try re packing the joint with CV grease to see if that helps but more the likely a replacement one is in order.

 

When I did mine I replaced the driveshaft only to find the problem re appeared after 500miles. Turns out it was a faulty driveshaft that was replaced under warranty.

 

Of course I could be completly wrong and it could be something else but its worth having a look at.

[kyepan 291]

i'm also getting this going on right hand corners, low milage recon driveshaft, have new bearings, bones, struts, topmounts.

 

sounds like a rub rub rub wheel speed noise when cornering hard.