Hi just about to replace my tyres on my 2007 rs4 what ars the best tyres

Best for what? Maximum dry grip? Maximum wet grip? Cheapest? Quietest? Minimum wear? "Best" depends entirely on your criteria, so what qualities you are looking for?

Best grip wet and dry

9 hours ago, Mark7052 said:

Best grip wet and dry

Look at tyre tests results on google , but usually it's Michelin's, pirelli etc etc. 

Mark,

For my S7 I've recently bought 275/35/20 Bridgestone's as they were rated at 69db compared to the Pirelli's at 73db. I know that doesn't look like a lot of difference, but there is a lot of rubber on the road and when fitted to 4 wheels, believe me it does make a difference.

Grip and handling in both wet and dry seems fine.

Was going for michelins 4s

Seam to be the best but most expensive 

Is the much difference to michelins 5?

Your always safe with Michelins, the only reason I steered away from them was because of potential tyre noise. Check out their db. rating as not all versions of Michelins are the same. Grip, handling and wear will be good I'm sure.

Our humble little 2006 A3 has always run on Michelin - since new.

A couple of observations noted when latest set fitted a year or so ago:-
Thread depth at new was measured at little over 6.5mm. compared to near 8mm on earlier sets. 

‘Grooves’ in threads now visibly wider than previous sets - so overall, less rubber for your extra money. 
Regards,

Gareth. 

Hi Gareth,

These days it seems that everyone is getting less for their money, I guess it includes tyres as well!!

Regards

Chris

By coincidence I need to replace the Michelin rear tyres on my wife's Skoda because the shoulders are starting to crack and crumble even though the tread depth is still 3-4 mm and the side walls are unscathed. The tyre fitter's comment on seeing them was "typical Michelins, the rubber's perishing from the weather."

I think this cracking is now far more of an issue than it had been previously - even with premium brand tyres. 
My experience with Michelin makes me think I might not bother to pay a premium for them in the future. 
Approx. 1.5 mm ‘loss’ of thread before you start represents quite a few miles of use! 
I’m now trialling mid-range Kumho tyres on our non-Audi, and other family member’s cars. Early days yet, but no disappointments so far. 

Mark,

Not sure when you intend buying your replacement tyres, but Asda Tyres (sounds daft I know, but I've bought tyres from them before and been pleased) seem to have some good deals currently.

They have all brands and will deliver to your door for you to arrange fitment (my choice) or will arrange fitment for you at your local tyre premises.

Worth checking their prices

Thanks will have a look 

Black circles always worth a look for deals, also national tyres do an interest payment plan , handy when all 4 come in at around a grand for my Sq5.