S7 Winter Tire Options (21” Rims)

[2018S7NY]

Hi all — newby here so thanks in advance for the support…

2018 S7 with 21 Rim (Black Optic Package)

OEM Tire Size is 275-30 R21

There are seemingly no Winter Tires for sale in that size…can I use 275-35 R21 without any issues???

Any insight or feedback is welcome, thanks!

[SPONGE]

You don't want to go all season?

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[2018S7NY]

I suppose its an option, but overall I’m happy with the summer tires — and don’t mind swapping them out seasonally.

[Mikes281]

I suppose its an option, but overall I’m happy with the summer tires — and don’t mind swapping them out seasonally.

Buy a set of used oem S7 20s…plenty of winter tire options and you’ll get a 35 series tire on there with no negative effect to suspension setup.

[2018S7NY]

Thanks — definitely an option if I strike out with tire only options.

[MattyMarkey]

Thanks — definitely an option if I strike out with tire only options.

The extra sidewall should fit without rubbing. Your Speedo will be off 2-3mph. The delta is on the boarder of what’s typically recommended for the Quattro system - try to stay <3% and that set-up is just shy of 4%.


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[2018S7NY]

[QUOTE=MattyMarkey;14855363]The extra sidewall should fit without rubbing. Your Speedo will be off 2-3mph. The delta is on the boarder of what’s typically recommended for the Quattro system - try to stay <3% and that set-up is just shy of 4%.


Many thanks @Matty — appreciate the level of detail and explanation.

[widebodyfx]

Wouldn't 255/35-21 make more sense? https://www.tirerack.com/tires/tires...omCompare1=yes

[2018S7NY]

That’s a good point — I’m certainly no expert, but a little narrower would probably be better in the snow. I was just trying to stay close to OEM measurements

[widebodyfx]

Narrower is likely a little better than wide, 20mm of sectional isn’t that big of a deal and gets you closer to OE diameter with a 35 series. Plus they’re winter tires and this is a terrible time to find a lot of sizes. Those Vredesteins are relative cheap too.

[sepheroth86]

Or, sell me your 21's on the low and buy a couple of sets of 20's!

[widebodyfx]

Such a problem solver!

[sepheroth86]

Such a problem solver!

I was trying to buy those RS7 21's with winter tires from the guy 'out by you' (Seattle), until he went radio silent for 4 days then told me he sold them. 😞

[2018S7NY]

Thanks to all — and I’ll keep the 21’s, lol.

[JWebb_C7_Comp]

Narrower is likely a little better than wide, 20mm of sectional isn’t that big of a deal and gets you closer to OE diameter with a 35 series. Plus they’re winter tires and this is a terrible time to find a lot of sizes. Those Vredesteins are relative cheap too.

I’ve got vredstein 255/40/19 on my A6. Good on cold and wet pavement. No snow speak of yet.


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[mwdelta]

Other folks who have put 275x35x21 tires on air suspension cars have had some issues with rubbing when at the lowest suspension level. Sounds like 265 is a bit better.

[eJB5RMwQ]

I run the Audi factory option 19s and have previously used the standard 20s which I found winter tyres for successfully.

The ride quality on the 19s is noticeably better.

[Krystofer66]

Does anyone know if an 18'' rim will fit on our S7s

[WideSuppie]

I went 245/35/21 I got brand new from Direct Tires for 700 since it's "used" as it's 2019 tires. It was originally selling for 900 but they were having a 200 off 800 or more so I end up paying 700 brand new 2019 tires.

[MattyMarkey]

Does anyone know if an 18'' rim will fit on our S7s

No, they will not clear the front cailpers


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