RS6B alloys on a MK2 Superb?

[aero-hot]

Hi, not sure if anyone has done this before, I've been tempted by a set of 19" genuine Audi alloys, I understand the offset will increase from ET46 to ET48 and the rim is an 8.5j as opposed to the standard 7.5j. Willtheyfit.com says the new wheel will sit 14.7mm closer to the suspension strut and poke out 10mm more, does anyone know if this will still give enough clearance? My standard alloys are 18". Any help would be appreciated. 

The wheels are similar to these https://www.ebay.co.uk/itm/4x-Genuine-Audi-A6-S6-19-Alloy-Wheels-4F0-601-025-DE-19-x8-5-factory-OEM-/294185672990?_trksid=p2349624.m46890.l49286

[chimaera]

Your biggest problem will be maintaining the correct rolling radius on the larger diameter wheels so your odometer stays correct. ET would need to change due to the wider, lower profile tyre having a different scrub radius but it's non-trivial to work out.

[aero-hot]

Thanks for the info, the Speedo would be reading less by 0.8mph at 60mph, I can live with that. My local VW specialist claims to be able to recalibrate the Speedo too, but they are reluctant (quite rightly) to give fitting advice on wheels they haven't seen. I was more concerned with the possibility of the wheel catching something like a brake hose or caliper with it sitting nearly 1.5cm closer to the suspension, I was hoping maybe someone had fitted 19"s to a MK2?

[chimaera]

There have been a few - if you browse through the pictures thread in this section, there are definitely a few posts in there with people doing this. You will also find the ride is going to be very firm. The stock 40 profile tyres on the 18s are pretty firm as it is, and going another 12-13 mm lower in sidewall height is not going to improve things.

[aero-hot]

 

30 minutes ago, chimaera said:

There have been a few - if you browse through the pictures thread in this section, there are definitely a few posts in there with people doing this. You will also find the ride is going to be very firm. The stock 40 profile tyres on the 18s are pretty firm as it is, and going another 12-13 mm lower in sidewall height is not going to improve things.

Thanks again for the info, I'll be sure to have a look through the pictures thread. 

[Mykul]

6 hours ago, chimaera said:

Your biggest problem will be maintaining the correct rolling radius on the larger diameter wheels so your odometer stays correct. ET would need to change due to the wider, lower profile tyre having a different scrub radius but it's non-trivial to work out.

Just a heads up...this can be corrected if you have access to VCDS

[chimaera]

7 hours ago, Mykul said:

Just a heads up...this can be corrected if you have access to VCDS

Only in a very limited way. Direct editing of the k-number is not possible on these cars (I've checked) and the only other valid coding is for 235/45/R18.

 

I wrote a bit about this here:

 

Edited 28 May, 2021 by chimaera

[Mykul]

I thought you could enter the circumference of the tyre and the make the changes for the speedo accordingly.

I'll have a look again because i have no idea of how to do it without hooking up the hex-net.

[aero-hot]

All good information, thanks, but I'm not too concerned about the Speedo being out by 1mph, would anyone know of the maximum or minimum offsets required to fit 19"s to the MK2? I've seen plenty of cars with it done, but I can't see any info on this. 

[Carlston]

I can't see any RS6 rims that have a specification even close to 8.5Jx19 ET48.

Audi RS6 2003 4.2TFSi

– Generation: C5 [2002 .. 2004]  

– Power: 444 hp | 331 kW | 450 PS 

– Engine: 4.2L, BCY, V8, Petrol

– Center Bore: 57.1 mm 

– PCD: 5x112 

– Wheel Fasteners: Lug bolts 

– Thread Size: M14 x 1.5 

– Trim Production: [2002 .. 2004]

Tire	Rim
225/45R18 95V	7.5Jx18 ET20	2.5
255/40ZR18 99Y	8.5Jx18 ET30	2.6
255/35ZR19 98Y	8.5Jx19 ET28	2.8
255/30ZR20 96Z	9Jx20 ET21	2.8

Audi RS6 2008 5.0TFSi

– Generation: C6 [2007 .. 2010]  

– Power: 572 hp | 426.5 kW | 580 PS 

– Engine: 5.0L, BUH, V10, Petrol

– Center Bore: 57.1 mm 

– PCD: 5x112 

– Wheel Fasteners: Lug bolts 

– Thread Size: M14 x 1.5 

– Trim Production: [2007 .. 2010]

Tire	Rim
255/40ZR19 102Y	9Jx19 ET29	2.6
255/35ZR20 102Y	9Jx20 ET29	2.8
275/35ZR20 102Y	9.5Jx20 ET36	2.8
275/30ZR21 101Z	10Jx21 ET29	2.8

 

Edited 29 May, 2021 by Carlston

[aero-hot]

1 hour ago, Carlston said:

I can't see any RS6 rims that have a specification even close to 8.5Jx19 ET48.

Audi RS6 2003 4.2TFSi

– Generation: C5 [2002 .. 2004]  

– Power: 444 hp | 331 kW | 450 PS 

– Engine: 4.2L, BCY, V8, Petrol

– Center Bore: 57.1 mm 

– PCD: 5x112 

– Wheel Fasteners: Lug bolts 

– Thread Size: M14 x 1.5 

– Trim Production: [2002 .. 2004]

Tire	Rim
225/45R18 95V	7.5Jx18 ET20	2.5
255/40ZR18 99Y	8.5Jx18 ET30	2.6
255/35ZR19 98Y	8.5Jx19 ET28	2.8
255/30ZR20 96Z	9Jx20 ET21	2.8

Audi RS6 2008 5.0TFSi

– Generation: C6 [2007 .. 2010]  

– Power: 572 hp | 426.5 kW | 580 PS 

– Engine: 5.0L, BUH, V10, Petrol

– Center Bore: 57.1 mm 

– PCD: 5x112 

– Wheel Fasteners: Lug bolts 

– Thread Size: M14 x 1.5 

– Trim Production: [2007 .. 2010]

Tire	Rim
255/40ZR19 102Y	9Jx19 ET29	2.6
255/35ZR20 102Y	9Jx20 ET29	2.8
275/35ZR20 102Y	9.5Jx20 ET36	2.8
275/30ZR21 101Z	10Jx21 ET29	2.8

 

Hi, thanks for this, but the wheel is from an RS6B model and you will see it if you Google the part number 4F0601025DE. 

This is an 8.5jx19 with an offset ET48.

 

Interestingly, my Old RS6 had totally different alloys. I have seen them on a superb on this site, but I can't see if they are genuine ones. I've replicas with an ET42 but would prefer the Ronal made Audi ones. This style is also on both the A5 AND Q5, but again although the wheel looks the same, it has an ET of 33 and is wider. There's even 20" versions so I'm specifically interested in the one with the part number 4F0601025 DE

[aero-hot]

1 minute ago, aero-hot said:

Hi, thanks for this, but the wheel is from an RS6B model and you will see it if you Google the part number 4F0601025DE. 

This is an 8.5jx19 with an offset ET48.

 

Interestingly, my Old RS6 had totally different alloys. I have seen them on a superb on this site, but I can't see if they are genuine ones. I've replicas with an ET42 but would prefer the Ronal made Audi ones. This style is also on both the A5 AND Q5, but again although the wheel looks the same, it has an ET of 33 and is wider. There's even 20" versions so I'm specifically interested in the one with the part number 4F0601025 DE

I'm wondering if the ones with the part number 4F0601025DE are actually off something else and simply look like the RS6B alloys 🤔, either way they're the ones I was hoping for to go on the Superb. 

[chimaera]

4F part number means it was designed for the C6 Audi A6, but not necessarily the RS or S versions.

[aero-hot]

1 hour ago, chimaera said:

4F part number means it was designed for the C6 Audi A6, but not necessarily the RS or S versions.

Makes perfect sense then. It's a beautiful wheel and the Dutch Superb on here with them or something similar fitted is a credit to its owner.

1 hour ago, aero-hot said:

Hi, thanks for this, but the wheel is from an RS6B model and you will see it if you Google the part number 4F0601025DE. 

This is an 8.5jx19 with an offset ET48.

 

Interestingly, my Old RS6 had totally different alloys. I have seen them on a superb on this site, but I can't see if they are genuine ones. I've replicas with an ET42 but would prefer the Ronal made Audi ones. This style is also on both the A5 AND Q5, but again although the wheel looks the same, it has an ET of 33 and is wider. There's even 20" versions so I'm specifically interested in the one with the part number 4F0601025 DE

I'm wondering if the ones with the part number 4F0601025DE are actually off something else and simply look like the RS6B alloys 🤔, either way they're the ones I was hoping for to go on the Superb. 

[Carlston]

 

Search "4F0601025DE" on the "VW online parts catalogue" for the cars that this OEM part number is linked to.

 

Catalog	Model code	Model Name	Years
Audi	A6	Audi A6/Avant	2009 2010 2011
Audi	A6Q	Audi A6/S6/Avant quattro	2009 2010 2011

 

http://www.oemepc.com/tvn_result/search/tvn/4F0601025DE

 

4

4F0601025DE

aluminium rim colour code:

8,5JX19H2 ET48 5/112 1H7 Model data: PR-F43

 

Edited 29 May, 2021 by Carlston

[aero-hot]

10 minutes ago, Carlston said:

 

Search "4F0601025DE" on the "VW online parts catalogue" for the cars that this OEM part number is linked to.

 

Catalog	Model code	Model Name	Years
Audi	A6	Audi A6/Avant	2009 2010 2011
Audi	A6Q	Audi A6/S6/Avant quattro	2009 2010 2011

 

http://www.oemepc.com/tvn_result/search/tvn/4F0601025DE

 

4

4F0601025DE

aluminium rim colour code:

8,5JX19H2 ET48 5/112 1H7 Model data: PR-F43

 

Brilliant, that's interesting, I'd like to think these should go straight on the Superb without any issues. 

[Carlston]

17 minutes ago, aero-hot said:

Brilliant, that's interesting, I'd like to think these should go straight on the Superb without any issues. 

 

The load index of 225/35R19 isn't high enough for the Superb MK2, as even the XL version is only 88 (560kg).

 

The XL version of 235/35R19 has a load index of 91 (615kg), so should be ok.

 

Edited 29 May, 2021 by Carlston

[aero-hot]

I'd not even considered that, but absolutely, a 235 XL would need to be fitted, I've looked at the Uniroyals as I've been happy with them before. 

[aero-hot]

Ok Guys, here is the finished thing - Genuine Audi Alloys, 8.5j x 19" with an ET48. Tyres are Uniroyal Rainsport 5 at 235/35/19 91Y XL, and the car has been lowered 35mm all round using the Bilstein B14 Coilover kit. All fitted by Demon Tweeks, who said that the fronts were very tight, but clear everything and are safe, and the rears had to have 5mm spacers and longer bolts. A 4 wheel alignment finished a 4hr job off. The ride is firmer, with none of the previous wallow, the car is smooth, planted and precise, the ride is no where near as hard as my Golf GTi. I'm delighted. I just need some centre caps! 

[Carlston]

I would avoid using wheel spacers that aren't hub centric, and you can't get hub centric wheel spacers that are less than 10mm. So the 5mm wheel spacers aren't hub centric.

 

Hub centric wheel spacers have a spigot to centre the wheels exactly on the hubs. By using wheel spacers that aren't hub centric you risk the wheel not being exactly centred on the hub, which will cause vibration.

 

Maybe consider 10mm hub centric wheel spacers front and rear. This will have the effect of changing the rim offset from the current ET48 to ET38.

 

I would want my wheel bolts to have between 6 and 10 turns. If it's more or less than this, look at buying longer or shorter wheel bolts. They are usually available in 5mm increments, such as lengths of 25mm, 30mm, 35mm, etc.

 

Eibach Pair of 10mm Pro-Spacer Wheel Spacers

https://www.demon-tweeks.com/eibach-pair-of-10mm-pro-spacer-wheel-spacers-kit-eibes90-2-10-027/?istCompanyId=a2904180-3a7d-4e56-b876-cf81c9512180&istFeedId=0f6db192-3a9a-4369-b1f8-79615c622f96&istItemId=wptpwmmll&istBid=t&awaid=6538&utm_source=redbrain&utm_medium=shopping&utm_campaign=css&gclid=EAIaIQobChMIsNnCndOB8QIVsuHmCh1TGwcYEAYYBCABEgK2pPD_BwE

 

Edited 5 June, 2021 by Carlston

[aero-hot]

Thanks, we spoke about these whilst we there, the technician showed us the hubcentric spacers fitted to the front and rear but the wheel poked out too far from the arches and it looked ridiculous so we didn't fit them, the technician wasn't comfortable sending the car out with them fitted. 5mm spacers are absolutely the maximum I'd want to go and only on the rear. These rims are really on the absolute ragged edge of fitting whilst still looking factory.  I'm confident that the current set up is best and that the Garage knows which set up is right.