JRomulus

Was looking at Audi Spare Wheel /Tire Oem parts and saw this:

https://parts.audiusa.com/p/Audi_201...G0601027E.html

Does this mean the exact same spare is used regardless as to which size wheel/tire configuration you have on your vehicle, 17 - 20" ??

gk1

Interesting. It does look like the wheel itself is the same part for all. Perhaps the spare tire size varies for each to make the correct overall diameter?

Glisse

If you lined up Audi OEM 17/18/19/21 inch wheels (with OEM tyres) as well as the space saver, you would see they are all the same height.

As the wheel size increases, so the tyre's sidewall profile decreases to maintain the same overall diameter.

KevinGary

Correct, all of the OEM tires have the same diameter.

tenspeed

Found one on eBay for $190 shipped.

Audi A6 A7 S6 S7 20" Spare Tire Wheel Rim Used 2012 2013 2014 2015 00357 | eBay

snagitseven

All correct. Another way to look at it is the bigger the wheel, the less rubber side wall height to maintain the same overall wheel/tire combo circumference and diameter.

JRomulus

Thank you all. Yes, the spare tire cavity in the trunk is the same diameter for all sizes I guess isn't it.

When searching on ebay for a wheel/spare combo then, all that should be necessary is model/year or e.g., A6/C7 or A3/8V, all should work regardless.

tenspeed

The cavity is the same diameter but a full sized tire is too wide to fit.

On the eBay search, stick to the C7 spares (A/S/6 - A/S/7's). No sure about the A3 bolt diameter and offset. If you search for common items such as headlights, tail lights or calipers, you can find vendors that are parting out C7's. They might make a deal or list the spare. You can also check and haggle with local junk yards to save shipping costs.