View Full Version : So, anyone started to think about winter yet...??

15-08-2013, 09:31 AM
I'm looking to buy a set of aftermarket wheels to put winter tyres on come the winter. Currently I have the 20 inch rims, but looking to downsize for the winter.

I'm looking to go the 17 inch route as this is (apparently) possible, the ideal specs of the wheel for the A7 would be 17X8j with an offset of 30 (with a play of 5mm so could get a wheel with an offset of 35), tyre specs would be 235/55 r17. I've read that going with thinner tyres would help with traction in the snow/ice hence the 17 inch route.

Interestingly, if you put the above figures in the following site to work out the rolling radius: (hope this is OK to post this link??)
Online Wheel & Tyre Fitment calculator. Offset, Tyre stretch and Rolling Radius calculator (http://www.willtheyfit.com/)
Changing from the 20 inch to the 17 inch will only result in 0.46% error in the speedo. Do the same for the 18 inch (ideal specs - 18x8.5J, offset 32, tyre specs of 255/45 r18), this will result in a speedo error of 1%.

So, anyone gone down the 17 inch route with the A7 as I'm pondering between the 17 or 18 inch.

Thoughts/comments welcome :)

15-08-2013, 06:54 PM
I'm looking at winter wheels (not for the A7 as ive not ordered it yet) but for my wife's A5. Was looking at going down the 17" route too and she currently has 19" whelks on. It is true that a narrower tyre will provide better traction and grip and that will only be helped by Quattro.

I'm looking at Dunlop tyres (cant remember the exact model) but they seem to have very good reviews.

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17-08-2013, 09:06 AM
18" is standard A7 wheels, so it may be best to stick to that. however I beleive that over the continent they specify 17" as standard. I am sure I saw someone breaking a 17" from an A7 a few months ago on ebay. AUDI A7 2011 ALLOY WHEEL 235 55 R 17 99Y WITH PIRELLI TYRE | eBay (http://www.ebay.co.uk/itm/AUDI-A7-2011-ALLOY-WHEEL-235-55-R-17-99Y-WITH-PIRELLI-TYRE-/161057584251?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item257fc7b47b) Found it. I think he will take an offer because this car was breaking a while ago. Not winter tyres but they seem to be almost new so you could sell them. I am waiting to find an 18" to match my already 18" wheels

Adrian James
28-08-2013, 01:52 PM
just found this v usefull link to see what wheels will fit PCD Audi A7 4G (2010 - ) 5x112 wheels | PCD, Offset, Center Bore, mounting and tire size data (http://www.wheel-fitment.com/car/Audi/A7%204G%20(2010%20-%20)/)