My little research on tyre fitment with 21x10,5 wheel on A7(C7)

[Stan77]

First of all, after 4 tries i finally found perfect tyre setup for 21x10,5 ET27

If you're planning to throw some 21x10,5 on your A7, i bet you'll want some aggressive offset, and according to the fact, if you want stanced look and planning to ride something lower than stock height, than i can suppose ET27 is a max, otherwise you'll face alot of issues with rubbing. So i'm writing down some facts, that can be very useful

1. Don't go more then ET27 if you're lowered
2. Most of 285-30-21 will RUB, if your offset is <30 but it depends on manufacturer, so read p.4
3. Forget about Runflat tyres in 275 and 285 sizes, in case of runflat technology it have insanely fat sidewalls, so overall even 275-30 tyre is wider that 285-30 non-runflat
4. Check out exact wideness of tyre because it's very different with every manufacturer. For example, on my practice 285-30-21 P-Zero is 9-10mm wider than 285-30-21 PSS.
5. Check out how tyre sits on the wheel, it must be stretched, if it's sitting straight, even with ET30 it will rub hard.
6. If you're not quite sure about exact setup go with less agressive offset, for example ET32-35, you always can use spacers (personally i don't like it, but it's just me)

My final setup is 21x10,5 ET27 with 275-30-21 Continental SportContact 5P, , no rubbing issues even on -30mm drop and fully loaded car. I must admit that Conti is less wide than PSS in same size.

About pics. May'be cause my age doesn't meet requirements of "facebook generation" i'm not taking photo of everything so i don't have pics for every setup saved and don't expect super quality pics ) Most of 'em are made with old iphone in bad light conditions. And pics of final setup will come ASAP, i'll ask some pro photographer to make it =)

285-30 PSS on 21x10,5 ET27 with 30mm lowering. Rubbing hard, but good for photo )



Admit that 285 PSS is a little bit stretched on 10,5J. Here is how rubbing looks )




Driveable height with PSS 285-30 Stock dynamic -5mm front, -10mm rear, still some rubbing on a hard cornering



Difference between 275-30 PSS Runflat (left) and 285-30 PSS non runflat (right). Even unmounted tyre is wider




Again, pics of the final setup coming soon, i've finished that quest just yesterday and i didn't even have a minute at daytime to take a photo, 'cause i don't want to impress you with pics in style "black man stealing coal at night" I'll update post later.

[tonymission]

27 sounds aggressive. Don't buy PSS rubber on that setup.


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[VeryBadman]

285/30/R21 PSS also rubs on 21x10.5 et30 if you lower your car too much. I just put that on over the weekends and they rubbed when I turned the wheel over the dip even in comfort mode with 30mm lowered. I found the lowest height I can go with that setup is 15mm from stock height in RS7 so I took the H&R box out since there is no point to use the box for the height that I can do with VagCom.

[Stan77]

27 sounds aggressive. Don't buy PSS rubber on that setup.


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285/30/R21 PSS also rubs on 21x10.5 et30 if you lower your car too much. I just put that on over the weekends and they rubbed when I turned the wheel over the dip even in comfort mode with 30mm lowered. I found the lowest height I can go with that setup is 15mm from stock height in RS7 so I took the H&R box out since there is no point to use the box for the height that I can do with VagCom.

that's what i've said )

[bonafyd]

Pics of said setups or this is just chit chatter

[ntsantos]

Has anyone tried running 275/35/21 on A7/S7? I think that's the oem size on the S8. It would be nice to have some extra meat on 21s.

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[Sd76]

In for pics of set up


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[Stan77]

Pics of said setups or this is just chit chatter

sounds like a challenge ) well, updated the post a little bit

[Stan77]

Has anyone tried running 275/35/21 on A7/S7? I think that's the oem size on the S8. It would be nice to have some extra meat on 21s.

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It will look ugly IMHO, too much meat ) car will look like a carriage

But it will fit if you're not extremely lowered and running agressive offset wheels

265-35-21 looks like that. On a wide wheel it'll look little bit better but still

[ntsantos]

It will look ugly IMHO, too much meat ) car will look like a carriage

But it will fit if you're not extremely lowered and running agressive offset wheels

265-35-21 looks like that. On a wide wheel it'll look little bit better but still

Got ya. I do like the look of the 30s, just fearing a harsher ride.

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[SlickMachine]

I just ordered a set of AG M510's in Matte Antique Bronze from Jason at GetYourWheels for Stock height A7. Wheels are 21"x 10.5 et27, PSS 295/25/R21.
Very low profile tire from what I've seen others running. Any thoughts? I'm sure the ride will be a bit more harsh than what I'm used to but its worth the look. Pictures to come when the are installed (5week build time).

[RSLRS71]

thank you for the insight on this...curious about the DRC RS7's

[2wookies]

I just ordered a set of AG M510's in Matte Antique Bronze from Jason at GetYourWheels for Stock height A7. Wheels are 21"x 10.5 et27, PSS 295/25/R21.
Very low profile tire from what I've seen others running. Any thoughts? I'm sure the ride will be a bit more harsh than what I'm used to but its worth the look. Pictures to come when the are installed (5week build time).

Are you lowering it while you wait for the wheels?

[SlickMachine]

Are you lowering it while you wait for the wheels?

Negative. As great as it looks I just don't want to get into that on this car.

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[2wookies]

Negative. As great as it looks I just don't want to get into that on this car.

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Hope it works out for you, and doesnt look like a 4x4.

[SlickMachine]

Hope it works out for you, and doesnt look like a 4x4.

Thanks for that. Really appreciate your well-wishes in that regard.

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[Horti Kris]

265/30/21 pss on 21x10.5 Sorry car is dirty.



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[SlickMachine]

265/30/21 pss on 21x10.5 Sorry car is dirty.



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Stock ride height? That is waaay too stretched for me.

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[Horti Kris]

lowered on links. Probably way too stretched for most. Doesn't rub though, front or rear. lol.

[Horti Kris]

Front wheel side view


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[SlickMachine]

Anyone know if 285/30/21 PSS et27 will rub on stock A7 ride height (non sport)? No air either, US model.

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[SlickMachine]

First of all, after 4 tries i finally found perfect tyre setup for 21x10,5 ET27

If you're planning to throw some 21x10,5 on your A7, i bet you'll want some aggressive offset, and according to the fact, if you want stanced look and planning to ride something lower than stock height, than i can suppose ET27 is a max, otherwise you'll face alot of issues with rubbing. So i'm writing down some facts, that can be very useful

1. Don't go more then ET27 if you're lowered
2. Most of 285-30-21 will RUB, if your offset is <30 but it depends on manufacturer, so read p.4
3. Forget about Runflat tyres in 275 and 285 sizes, in case of runflat technology it have insanely fat sidewalls, so overall even 275-30 tyre is wider that 285-30 non-runflat
4. Check out exact wideness of tyre because it's very different with every manufacturer. For example, on my practice 285-30-21 P-Zero is 9-10mm wider than 285-30-21 PSS.
5. Check out how tyre sits on the wheel, it must be stretched, if it's sitting straight, even with ET30 it will rub hard.
6. If you're not quite sure about exact setup go with less agressive offset, for example ET32-35, you always can use spacers (personally i don't like it, but it's just me)

My final setup is 21x10,5 ET27 with 275-30-21 Continental SportContact 5P, , no rubbing issues even on -30mm drop and fully loaded car. I must admit that Conti is less wide than PSS in same size.

About pics. May'be cause my age doesn't meet requirements of "facebook generation" i'm not taking photo of everything so i don't have pics for every setup saved and don't expect super quality pics ) Most of 'em are made with old iphone in bad light conditions. And pics of final setup will come ASAP, i'll ask some pro photographer to make it =)

285-30 PSS on 21x10,5 ET27 with 30mm lowering. Rubbing hard, but good for photo )



Admit that 285 PSS is a little bit stretched on 10,5J. Here is how rubbing looks )




Driveable height with PSS 285-30 Stock dynamic -5mm front, -10mm rear, still some rubbing on a hard cornering



Difference between 275-30 PSS Runflat (left) and 285-30 PSS non runflat (right). Even unmounted tyre is wider




Again, pics of the final setup coming soon, i've finished that quest just yesterday and i didn't even have a minute at daytime to take a photo, 'cause i don't want to impress you with pics in style "black man stealing coal at night" I'll update post later.

Stan... If you're still active here can you please post some pics of your final setup on the Conti 275/30? I'm having a hell of a time committing to that much stretch but I'm not sure I have a choice with the 27 offset. Would love to stick with pss285/30 on Eibach 1"drop.

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