S6 Wheels and Tires

Confirmed:
OEM 20’s

http://uploads.tapatalk-cdn.com/20160315/a61175386af5eef954f1c113d008ff7b.jpg

Also even though no-one asked:
OEM 18’s

http://uploads.tapatalk-cdn.com/20160315/69459e2e390b7c0853eec09999ee66fa.jpg

http://uploads.tapatalk-cdn.com/20160315/cf71da0a5c7512cfa42eabd0de7cf185.jpg

GRAVEDIG! Lol. I figured since my concern was about wheels, why start a new thread?

Anyways, I found some replica Audi R8 19in rims but I want to confirm my hunch. The specs are the following:
19x8.5 offset 40

So obviously i’ll need some wheel spacers to keep the OEM offset 52. Would the 8.5 width affect anything with my tires? I’m running 265/35/19 (standard for OEM).

I’d say keep the offset at 40 - you’ll be closer to flush with the fender - the one’s that are poking above are probably ET33 offset…

Oh, okay. That’s not bad at all then.

I have 18x9 et 35 winter wheels and they are tucking on my air ride, so I’d say et40 will be more than ok.

Those rims will be fine for the car, and 40 offset will look great, but those rims are “borderline” for the width of the tires.

A shop may be hesitant to mount 265 wide tires on 8.5" rims, because max recommended tire width for an 8.5" wide rim is only 255 wide. By the book anyways. If you come in and out of corners like it’s track day, then the possibility exists that the tire can kinda deform sideways, because the contact patch of the tire will be somewhat ballooning/bulging out of the rim. I personally think this effect would be borderline zero in your case, BUT, if you do corner hard, then I would definitely be certain not to overinflate the tires because being overinflated could seriously effect your cornering grip while your contact patch is already in this moderate “balloon” situation.

Here’s an illustration of an image I found with “tire too wide” search on Google, to illustrate what I’m saying:


http://audirevolution.net/addons/albums/images/285612925.png

In above picture, the middle image is the “rim too narrow / tire too wide” extreme example. The left image is the normal install. The image on the right is the “stretched” tire, which some people find cool, but I think stretched tires look retarded.

And for text book tire widths vs rim widths, a Google search for “tire rim width chart” will find charts like these two, showing recommended tires sizes for rims:


http://audirevolution.net/addons/albums/images/875337373.png


http://audirevolution.net/addons/albums/images/683017634.jpg

I guess some S6’s come with 255 wide tires. This fitment info is from Google search for “2010 S6 offset”. You can see the OEM rims jump from 8.5" wide to 9" wide when going from 255 wide tire to 265 wide tire:


http://audirevolution.net/addons/albums/images/681504572.png

Thank you VERY much! This has been extremely insightful and the mighty tool of Google is key when you know which words to search up. Awesome stuff - again, thanks a lot. It’s greatly appreciated.

And regarding wheel spacers, just so ya know, wheel spacers do not increase offset number. A higher offset number sends the rim into the center of your car, and a lower offset number sends the rim away from the center of your car. In other words, wheel spacers decrease offset number. With your offset of 40, for example, when adding a 5mm wheel spacer, that would change the offset to 35, which probably pushes the rims and tires to pretty much touching the fender lip.

I’m confused then. I was under the impression that offset was from +X to -X with 0 being dead center.

https://mickeythompson.files.wordpress.com/2013/07/wheel-offset-diagram-all-text.jpg

With wheel spacers, wouldn’t the offset increase since in essence the wheel is being pushed further from the vehicle?

EDIT: After researching, I see your point. Would a 40 offset look too odd on the S6?

Happy to help. The Google references are not only for your specific question, but also to beef up this thread and help future readers with different fitments.

And yeah when people have “more offset”, it usually means “lower offset number”, so that’s confusing, but what can ya do, right.

So now that you have a better understanding of offset, it may help to re-read this thread, to see the set ups people have mentioned. “BlackS6” had Reply 24 in this thread with some awesome pictures. He was running 255 wide tires and 35 offset. However, he also rolled his fenders.

And if you don’t know what “rolled his fenders” means, then Google “fender rolling”. Haha. Essentially you pinch the inside edges of the fender all along the edge of the fender, to give you just a little more rim/tire room.

I believe this is compugeek5150 looking at BlackS6’s Reply #25 on: January 08, 2016, 11:58:16 AM

I think we can all agree that the 40 offset will look good.

The difference between this ET40 and factory ET52 is basically going to see the rim’s lip moving 12mm closer to your fender (52-40). In other words, the rim’s lip moving 1.2cm closer to your fender, or, about half an inch closer to your fender. You can go check yourself by putting your finger between the rim and the fender. Good to go.

And if you’re eyeballing this with your finger, consider that unless you’re SURE sure that you have factory rims (or unless you’ve seen the offset stamped on the back of the rim), then you might just have replicas with a different offset than OEM. Or, you may have aftermarket wheels with Frankenstein’d center caps that just look factory. Again, offset might be different on aftermarket wheels that look factory. If you see any pictures of my wagon on here, then those wheels are not factory. They just look factory (factory Audi front of cap stuck on aftermarket caps).

murphenur says he’s running a 35 offset, and it fits under his air suspension. Good to go.

He is talking 18" rims, but remember that overall diameter of tire stays the same regardless of rim size (sidewall height changes), unless you’re deliberately going away from a factory tire height. Most people keep the same overall diameter, so that your setup will be compatible with your full sized spare tire, and your spedometer.

Here’s an example of custom OEM-look center caps, made for lightweight Enkei RPF1 wheels. Offset not OEM. So if you were eyeballing these on your car and thinking about what would fit compared to these “factory” wheels (like if they came with the car and you assumed they were OEM), then you’d be wrong to assume factory fitment when eyeballing. Ya know? Some day soon I’m gonna create a thread for these over in the A4 section:


http://audirevolution.net/addons/albums/images/193812019.jpg


http://audirevolution.net/addons/albums/images/995532887.jpg


http://audirevolution.net/addons/albums/images/147254795.jpg

That’s all good information and I love those caps.