Hi once again,
Thanks for your reply's. My tyres were changed yesterday and the tracking checked. The tracking was out slightly and corrected and now my IS 200 Sport Cross is running, as you said it would Michael, as quiet as a mouse. A lot of reply's to similar noises from these model cars were ended by a 'just turn the radio up and ignore it'. In some cases of course you have to just shrug and do that due to the cost of possible repair or complete frustration in not being able to find the source of the noise. If only the MPG was better but it's a straight six for goodness sake so ....shrug with a big smile. Thanks again.