325/25/20 on M6?

BlackBear · 10-29-2018, 02:11 PM

Who has done it?

What modifications are needed?

What wheel size and offset did you use?

brad850csi · 10-29-2018, 11:44 PM

Plenty of people have done 325/25r21 and the offset tends to be around 20mm. I don't know of anyone with 325/25r20 and honestly they are a bit too short anyway.

M6 CV · 11-02-2018, 04:29 PM

I have 325/30/20 Michelin Pilot Sport Cup 2s on HRE wheels 20X11, ET 23, no issues.

brad850csi · 11-02-2018, 06:47 PM

Quote:

Originally Posted by M6 CV

I have 325/30/20 Michelin Pilot Sport Cup 2s on HRE wheels 20X11, ET 23, no issues.

Pics?

kong24680 · 11-02-2018, 08:42 PM

Quote:

Originally Posted by M6 CV

I have 325/30/20 Michelin Pilot Sport Cup 2s on HRE wheels 20X11, ET 23, no issues.

Stock suspension? If so, competition or non comp?

M6 CV · 11-05-2018, 03:47 PM

Competition model, stock suspension.

Will try to post some pics tomorrow.

kong24680 · 11-05-2018, 11:22 PM

Quote:

Originally Posted by M6 CV

Competition model, stock suspension.

Will try to post some pics tomorrow.

Any rubbing at all?

M6 CV · 11-06-2018, 06:13 PM

No rubbing ever. Name: untitled2.png
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brad850csi · 11-07-2018, 11:39 AM

Thanks! They fit the car well.

kong24680 · 11-07-2018, 04:14 PM

After I burn through my 305 cup 2's these are next on my list. I'm running a 20x11 et27 rear wheel, so hoping I don't run into any rubbing issues...

MelbourneFinn · 11-09-2018, 03:34 PM

Quote:

Originally Posted by M6 CV

No rubbing ever.Attachment 1931798

Attachment 1931799

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Cool colour scheme, consider painting calipers red as well?

Rear tyres look spot on, but front tyres look a size too big - that’s just my opinion, though...

brad850csi · 11-09-2018, 07:49 PM

Quote:

Originally Posted by MelbourneFinn

Cool colour scheme, consider painting calipers red as well?

Rear tyres look spot on, but front tyres look a size too big - that’s just my opinion, though...

Do you mean too tall or too wide?

malcoll · 11-09-2018, 10:07 PM

Can this size tire fit on the stock 601 rear wheels? I am up for new tires now, and looking for more width in the rear!

MelbourneFinn · 11-10-2018, 01:40 AM

Quote:

Originally Posted by brad850csi

Do you mean too tall or too wide?

A bit too tall IMO. Might look more balanced with an inch bigger rims, to reduce the side wall slightly...

Havy · 11-10-2018, 06:58 AM

The car looks awesome

I love the 325 in the back. Which size do you have in front?
What kind of side skirts are those? Vorsteiner?

M6 CV · 11-10-2018, 09:50 AM

Happy to answer any questions re my particular set up.

The front wheels are HRE 20X9.5 ET28 with 275/35/20 MPSS

All the carbon is from RW Carbon. I had no quality or fitment issues, very satisfied.

BlackBear · 11-10-2018, 06:21 PM

Thank you for all the details.

My car is a 2013 still on stock rims. Rear tires are Michelin, fronts are Pirelli.

I have a tune and an exhaust.

My traction control intervenes in turns which I consider not aggressive at all.

It also kicks in when I floor it, even at 45 mph. That is due to the monster power the OpenFlash tune makes. And wider tires may take care of the problem. At least improve it a little.

Is the fact the front and rear have two different tire brands the only factor disturbing my traction control in mild turns?

Has anyone had this issue caused by two different brands on the front and rear?

Quote:

Originally Posted by M6 CV

Happy to answer any questions re my particular set up.

The front wheels are HRE 20X9.5 ET28 with 275/35/20 MPSS

All the carbon is from RW Carbon. I had no quality or fitment issues, very satisfied.

Havy · 11-11-2018, 05:03 AM

The mixed tires have nothing to do with the Intervention of the TC. It is always or only when the tires and road is cold? It could be due to the power. 560+HP is a lot.

brad850csi · 11-11-2018, 11:39 AM

Quote:

Originally Posted by BlackBear

Thank you for all the details.

My car is a 2013 still on stock rims. Rear tires are Michelin, fronts are Pirelli.

I have a tune and an exhaust.

My traction control intervenes in turns which I consider not aggressive at all.

It also kicks in when I floor it, even at 45 mph. That is due to the monster power the OpenFlash tune makes. And wider tires may take care of the problem. At least improve it a little.

Is the fact the front and rear have two different tire brands the only factor disturbing my traction control in mild turns?

Has anyone had this issue caused by two different brands on the front and rear?

What size, brands and model do you have?

BlackBear · 11-11-2018, 02:00 PM

Front Pirelli P-Zero 265/35/20

Rear Michelin Pilot Super Sport 295/30/20

All tires have very good tread.

The sizes are correct factory sizes. Both tires are approved by BMW.

I know that the straight line traction issues are caused by too much power.

My question really is if anyone has had issues with the two brands mixed on an M5 or M6 like I'm having with traction control intervening in mildly aggressive turns?

I have had this problem on a Porsche Turbo when I mixed brands. The only remedy was to switch to Michelins all around. After I did that there was no more premature traction control intervention in turns.

Some cars are more sensitive than others.

Quote:

Originally Posted by brad850csi

What size, brands and model do you have?

Havy · 11-11-2018, 02:08 PM

That’s sounds like over/ understeer and the TC comes in too early. Normaly the Michelin PSS are super tires.

gab24m3 · 11-11-2018, 04:14 PM

I have 21” 325’s in the rear

10-29-2018, 02:11 PM	#1
BlackBear Second Lieutenant 33 Rep 212 Posts Drives: M6 Cab + M850 + McLaren 570Spi Join Date: Jul 2012 Location: Sunshine iTrader: (0)	325/25/20 on M6? Who has done it? What modifications are needed? What wheel size and offset did you use?
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10-29-2018, 11:44 PM	#2
brad850csi Colonel 1316 Rep 2,349 Posts Drives: 16 F13 M6 Comp Join Date: Jan 2015 Location: Auckland, New Zealand iTrader: (0)	Plenty of people have done 325/25r21 and the offset tends to be around 20mm. I don't know of anyone with 325/25r20 and honestly they are a bit too short anyway.
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11-02-2018, 04:29 PM	#3
M6 CV New Member 5 Rep 17 Posts Drives: 2014 BMW M6 CV Join Date: May 2017 Location: Florida iTrader: (0)	I have 325/30/20 Michelin Pilot Sport Cup 2s on HRE wheels 20X11, ET 23, no issues.
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11-05-2018, 03:47 PM	#6
M6 CV New Member 5 Rep 17 Posts Drives: 2014 BMW M6 CV Join Date: May 2017 Location: Florida iTrader: (0)	Competition model, stock suspension. Will try to post some pics tomorrow.
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11-06-2018, 06:13 PM	#8
M6 CV New Member 5 Rep 17 Posts Drives: 2014 BMW M6 CV Join Date: May 2017 Location: Florida iTrader: (0)	No rubbing ever.
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11-07-2018, 11:39 AM	#9
brad850csi Colonel 1316 Rep 2,349 Posts Drives: 16 F13 M6 Comp Join Date: Jan 2015 Location: Auckland, New Zealand iTrader: (0)	Thanks! They fit the car well. __________________ SCOTT26 "So as an admirer of the M5 and a potential customer of an M5 Touring. I would run naked around the streets of Garching if they were to offer one."
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11-07-2018, 04:14 PM	#10
kong24680 Captain 252 Rep 998 Posts Drives: Silverstone Metallic F06 M6 Gr Join Date: Feb 2014 Location: Bay Area iTrader: (5)	After I burn through my 305 cup 2's these are next on my list. I'm running a 20x11 et27 rear wheel, so hoping I don't run into any rubbing issues...
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11-09-2018, 10:07 PM	#13
malcoll Private First Class 23 Rep 110 Posts Drives: 2014 M6GC BSM/SO Join Date: Jul 2017 Location: Florida iTrader: (0)	Can this size tire fit on the stock 601 rear wheels? I am up for new tires now, and looking for more width in the rear!
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11-10-2018, 06:58 AM	#15
Havy Captain 303 Rep 709 Posts Drives: BMW X5 M50i Join Date: Sep 2018 Location: Europe iTrader: (0)	The car looks awesome I love the 325 in the back. Which size do you have in front? What kind of side skirts are those? Vorsteiner?
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11-10-2018, 09:50 AM	#16
M6 CV New Member 5 Rep 17 Posts Drives: 2014 BMW M6 CV Join Date: May 2017 Location: Florida iTrader: (0)	Happy to answer any questions re my particular set up. The front wheels are HRE 20X9.5 ET28 with 275/35/20 MPSS All the carbon is from RW Carbon. I had no quality or fitment issues, very satisfied.
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11-11-2018, 05:03 AM	#18
Havy Captain 303 Rep 709 Posts Drives: BMW X5 M50i Join Date: Sep 2018 Location: Europe iTrader: (0)	The mixed tires have nothing to do with the Intervention of the TC. It is always or only when the tires and road is cold? It could be due to the power. 560+HP is a lot.
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11-11-2018, 02:08 PM	#21
Havy Captain 303 Rep 709 Posts Drives: BMW X5 M50i Join Date: Sep 2018 Location: Europe iTrader: (0)	That’s sounds like over/ understeer and the TC comes in too early. Normaly the Michelin PSS are super tires.
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11-11-2018, 04:14 PM	#22
gab24m3 Private First Class 15 Rep 106 Posts Drives: 14 ///M6 Comp Pack. AW⚪& Join Date: May 2009 Location: El Paso, TX. iTrader: (0)	I have 21” 325’s in the rear
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