Thanks for quick responses guys.
I can't find the Avon's available in my size, and whilst as you state that at 70bD they are 1dB more than the F1's, I think you are looking at 19" spec, as the F1's move up to 71dB in 20" guise.
The F1 SCT spec states the same dB value as non-SCT, as both the 11dB and 4dB reductions are both "up to", and hence they can't quote any benefit. However, as noise levels double/halve every 3dB (or somethinng around that value), it has the potential to roughly halve the interior noise.
Mine is an April 15 reg car, but checking with Audi, physical build date was Dec 14. Tyres on car are original fit F1's (16k miles) and I can't find any markings to suggest they are already SCT.
Interesting point on puncture repairs - probably a good question for me to pose to my fleet tyre provider, as might get a response via that route, as Goodyear unlikely to respond with anythinng other than marketinng BS at a consumer level.
Cheers
Mark.
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