`knoking' sound on the left rear wheel

[Maverickhk]

Help~~~! I bought this NSX two week ago..and today i heard some `knoking' sound comes out from my back....my friend helps me to find out where the source copme from....we both agree the `knoking' is come from the left hand side rear wheel...while the speed slow down, the knoking is slower, when the speed goes up, the knoking knok quicker.
this happen 10 to 15 mins after i start the engine...any body knows what would happen?

 

[Doc308]

It could possibly be a cv joint or wheel bearing going bad .

 

[nsxhk]

Maverick,

Could it be a small piece of rock stuck on your left rear tire?

Henry.

 

[PoohBEAR]

knock knock.......

 

[MLmotorsport]

knock knock.......

who's there?....