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Slightly different question as to what has been asked so far so here goes:

My '11 has the 10 spokes. Looking at ordering some new 19's.

If going to a 9" wide wheel, what would be the "ideal" offset so as to avoid needing any spacers and have the flush look?


I see that many use slightly bigger spacers in the back, so if I look for all 4 wheels to be the same, I understand I might still need a 5mm spacer for the back. Most say 20/25, some say 15/20, either way if I get all four the same, I'll probably need 5mm for the back. That I can live with.

Using the willtheyfit tool, I really need to know how much backspacing we have available before the rim hits the suspension.

From looking at the tool, anyone with a 10/10.5 inch wheel has to have less clearance on the inside than stock or they would have tons of poke.
 

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Hi just wonder! I have a A5 Sportback S-Line with S-Line sport suspension originaly from Audi (S-Line) lowered 30mm, and the car was delivered from Audi with 19" 255/35 S-Line wheels. But will this wheel also fit on my car???


9 X 20" ET 29 265\30R20
9 X 20" ET 26 275\35R20 for OEM RS rotors


Thanks for your reply, and thanks for a nice site and tread with a lot of good information regards this, the very best from Geir
 

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I want to change the rims and wheels for my 2008 A5 couple. The new wheel parameter is 18 inch, 9j, ET30. The tire I use is 18/40/245. Do I need a spacer or it has been aggressive enough?
 

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Hello I know this thread is old but I didn't want a new thread for this question. I have a 2013 A5 with 19s currently on it. I need some winter tires due to being here in Colorado. Would 16 inch wheels work for my car?
 

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I haven't measured it, so this is only a guess, but I suspect the smaller diameter wheel would foul the the brake caliper. I know that 17s are okay, but the 16s might be a bridge too far.
 

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Hey I'm a tire noob and had a question about winter tire fitment. I own a 2013 Audi A5 S line and currently have the stock wheels on which are 235/55/19 18 x 8.5 ET32

I just picked up winter tires that are 225/50/17 17 x 7.5 ET35. Will these be okay on my A5? I used an offset calculator and it said my inner clearance will increase by 10mm and outer position will retract by 16mm. Can somebody please help me out
 

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Hey I'm a tire noob and had a question about winter tire fitment. I own a 2013 Audi A5 S line and currently have the stock wheels on which are 235/55/19 18 x 8.5 ET32

I just picked up winter tires that are 225/50/17 17 x 7.5 ET35. Will these be okay on my A5? I used an offset calculator and it said my inner clearance will increase by 10mm and outer position will retract by 16mm. Can somebody please help me out
You sure those sizes are correct?

Assuming those dimensions are correct apart from the 235/55/19 should be 235/55/18... then they will physically fit (assuming 17" is big enough to clear the brake calipers) BUT you will be out on speed by 8% which is WAY outside of the +/-2% normal - 80mph will in fact be 73.5mph. You may also invalidate your insurance with such a big differential. There is no way I'd run with those tyres/tires at that differential....

Having said that, the current stock tyres on an SLine A5 is 245/40 R18 - which is 9% smaller than the 235/55/18's you've quoted above which makes me suspicious. Current stock 19" wheels are 255/35 (and for completeness, stock 20" are 265/30's....)

This should help you: https://tiresize.com/tyre-size-calculator/
 

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Hi just wonder! I have a A5 Sportback S-Line with S-Line sport suspension originaly from Audi (S-Line) lowered 30mm, and the car was delivered from Audi with 19" 255/35 S-Line wheels. But will this wheel also fit on my car???


9 X 20" ET 29 265\30R20
9 X 20" ET 26 275\35R20 for OEM RS rotors


Thanks for your reply, and thanks for a nice site and tread with a lot of good information regards this, the very best from Geir
Hi Geir,

9 X 20" ET 29 265\30R20 Should fit fine as I have them on my A5 3.0tfsi Sline Black Edition. This came directly from Audi.

My additional question to everyone would be could I fit 275\30R20 to the 9Jx20 ET29 (p/n AUD 8T0601025CM - 8T0601025L1H7 -20" Audi 7 Double Spoke Wheels) and would this fit under my wheel arch? As this is the OEM size for the RS. The 265 tyres cost waaaaaaaaay more than 275 (in my current location) as 275 is more of a common tyre.

Your help would really be appreciated.

Thanks,

Max
 

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Great post! This helps out but most beginners still have questions about backspacing and clearance.

The calculators mentioned are great ideas but they can’t answer follow up questions most beginners ask. I’ve never felt confident using these online calculators. What if car is bagged, coiled or stock height? The specs will change. Insiderscustomwheels.com specializes in answering these questions for our clients. They make the buying experience simple and easy.
If anyone plans to add wheels and want to keep the speedo and stock look the same use this tool Tire Size Comparison. This allows you to check wheel radius.

For offset and Will it fit question, save time and headache and speak with a professional at Custom Rims. Our mission is to provide you with flush to fender fitment without sacrificing ride quality. We know exactly which wheel offset manufacturers have made to work with your vehicle. We guarantee fitment.
 

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After seeing that there is beeing started new threads on the same topic
almost every day I wanted to make an thread to help this.

Looking for new wheels or just wondering about what size will fit?

Audi A5 has been delivered with different sizes according to different motors or where dey are delivered.

The standard wheels are usually:
7,5 X 17" ET28 With 225\50R17
8,5 x 18" ET 28 245\40R18
8,5 X 19" ET 32 255\35R19
9 x 19" ET 33 255\35R19
9 X 20" ET 29 265\30R20
9 X 20" ET 26 275\35R20 for OEM RS rotors

The bolt pattern are 5x112, centre hub must be 66,6mm(online it's written 66,1 66,5 and 66,6)

This is mostly the basic "must know"

What does offset mean:
Tirerack will tell you


calculator for wheels and tires:
Will they fit?
Offset calculator
And another offset calculator


Usual question are:

will wheels from a4\a6 or other audis fit my A5?
-Yes, sort of, if the centre hub is same size(older audis uses smaller centre hub), but the offset is wrong, then you would have to use spacers.
Use of spacers has been discussed if are safe\smart, but there will be more stress on wheel bearings.

The orginal wheels don't sit close enough to the fenders, how big spacer is needed?
-The answer is normally depending on what width the wheels are. And how flush you want it to be.But you can either measure
the space from wheel to arch and using the calculator above. Or read what others use and calculate.


If I lower my car will this affect how big and\or wide wheels I can use?
-Both yes and no, depend on how low you are going. But usually you can go really low on the 5'er without downsizing on the wheels.


How big wheels can i put on the 5'er?
-People have used up to 21" without modifying anything, but with bigger wheels the car can look higher, and you might want to lower it.


Will other wheels affect the perfomance or handeling?
-The fact is there are light wheels and heavier wheels, heavier tires will make your car slower on acceleration and use more fuel.
Wide tires can make better traction and grip. But can also be the oppositt on wet road.


Should I use staggered wheels or not?
-Usually no problems, but if it is Quattro, it must be same rolling circumference, or within few % difference.

How wide wheels can fit?
-I've seen 10,5" wide wheels used in front and 12" and 13" used rear.
Example:
10" in front and 11" in the back

Ask question here instead of making a new thread and first post can be updated with info.
Hello, I have a 2014 A5 Cabriolet Quattro original wheels with
ALY58912 Audi A5, S5 Wheel Silver Painted #8T0601025CA8Z8 size: 18"x8.5 et29 with 245/40/18.
I replaced with (TSW Bathurst silver #2010BAT255112S72 size: 20"x10" et25) square - all around with 295/30R20. Fitment and stance perfect no spacer/ no suspension mods. Tires & wheels approximately flush with finders, about 8mm under from flush on rear and perfect even on front. You could still add 8mm spacers on rear to be flush on rear. Definitely would not go any wider than 20x10 et 25 with 295/30R20 if you are going square all around and without suspension mods and because you have a Quattro transmission requirements and need to be square diameters on wheel/tire around vehicle. Hope my experience with fitting my A5 helps some folks out there!
 

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Hi. Im thinking of going to 20inch. At the moment ive got 255 35 r19. Would 255 40 r20 fit nice without any mods??
 

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Hi. Im thinking of going to 20inch. At the moment ive got 255 35 r19. Would 255 40 r20 fit nice without any mods??
No, the 40 will be way to tall, 255/35R20 would fit inside the wheel well with no mods perfect
 

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Hi all. I created a new post here.
But maybe answered here:

Hi all.

I swapped my alloys for the genuine rotors (deep ones) a while ago.

I believe the alloys are 8,5 X 19" ET 32 255\35R19

Since then I noticed the front wheels hitting the arch as you turn.

I was advised to get spacers, if I remember correctly 25mm on front and 20mm on the back.

When the tyre place put the spacers on, one bolt on the driver's side didn't go in, it was just spinning and wouldn't catch on.

4 weeks ago I had all four tyres changed and they had the same issue with the one bolt but all others where fine.

After getting a screw, in the middle, not realising and driving it essentially flat, the tyre was ruined so needed replacing.

The new tyre garage where appalled at the bolts saying only 2 threads had caught on, because of this the first thread in the hub had been damaged.

I am now confused, what length bolts do I need?

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Dude you are lucky those wheels didn't just fly off the car!!! If you use (20mm Spacer, then you need 14x1.5 - 45mm long) wheel bolts either Ball seat type if Audi wheels or Conical for most aftermarket. Check your wheel type seats for Ball or Conical before you buy them. If you use (25mm spacers, then you need 14x1.5 - 53mm long wheel bolts. You can buy them on Amazon, USP Motorsports, ECS Tuning or google them. Good luck, hope this helps!!!
William
 

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Dude you are lucky those wheels didn't just fly off the car!!! If you use (20mm Spacer, then you need 14x1.5 - 45mm long) wheel bolts either Ball seat type if Audi wheels or Conical for most aftermarket. Check your wheel type seats for Ball or Conical before you buy them. If you use (25mm spacers, then you need 14x1.5 - 53mm long wheel bolts. You can buy them on Amazon, USP Motorsports, ECS Tuning or google them. Good luck, hope this helps!!!
William
Thanks for getting back to me.
Forgot to add, I was given longer bolts with the spacers. Maybe not long enough?

Thanks for the info, I'll check them out. I am supposed to be seeing a friend this morning who specialises in all things wheels. Fingers crossed will get sorted

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Hi, I have just purchased an ex demo which was used by a salesman in the dealer, it was registered in January and noticed when cleaning them that only one wheel out of four is smooth on the inside, therefore hard to clean.
I asked Audi why the wheels were not all the same and they confirmed that nothing has been done to them.

Has anyone else had the same?
Is there anything I can do without having to dip into my own pocket?
 
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