G05 M50i 21" vs. 22" wheels?

Bigtop · 10-19-2019, 09:48 PM

21" wheels have run flats, 22" wheels do not. Run flats have stiffer sidewalls by design. 22" wheels will have less rubber tire height. Which ones will have the stiffer ride?

21" with run flats will have stiffer and more rubber protection/insulation(tire height) for getting rim damage from rough roads, correct?

Ninefourteener · 10-20-2019, 06:13 AM

Yes... 21s will have a taller sidewall, and more protection frim pothole damage. I ordered the 21s for that very reason.

I'm going off memory..... but if I recall correctly, the tire sizes for 21s are;
275/40/21 - front
315/35/21 - rear

And for 22s, they are:
275/35/22 - front
315/30/22 - rear

Boxer · 10-20-2019, 07:06 AM

The 22” are non-run flat and they provide a nice comfortable ride from my limited experience (~300mi). I’ve not driven the 21” but that is what I ordered for the reasons above—some Boston roads are great, some not so much. At $400-$500 for these big tires, a little extra pothole protection was the deciding factor.

Gtz1wickedest · 10-20-2019, 07:51 AM

I have the 22s in NYC and rides so much better than my f15 with 20 run flats but I also have air suspension which makes it better

MystroX5 · 10-20-2019, 08:50 AM

Are you going to drive in mixed weather (snow, sleet, cold temps)??

Bigtop · 10-20-2019, 09:08 AM

Quote:

Originally Posted by MystroX5

Are you going to drive in mixed weather (snow, sleet, cold temps)??

I drive in snow for quite a bit of the year so will order some additional 20" wheels and Bridgestone Blizzak DM-V2s for the winter and change the wheels for the summer.

My instinct is to go with the 21" wheels, our roads in Colorado are in an awful condition (potholes, etc.).

Yogujuhere · 10-20-2019, 11:44 AM

RFT = Run-Flat
NonRFT = Non Run-Flat

Getting stuck on the side of the road with a 5000 lb truck in the rain and changing to a small spare tire in a suit wasn't what I would call the highlight of my day last winter when I opted for the Non-RFT on my F15.

Keep in mind that RFT technology has gotten a LOT better compared to what it was even 5 years ago. The gap between RFT and NonRFT in terms of comfort has become a lot closer.

This time around, I'm going with the RFT w/21's. Peace of mind goes a long way.

jumpingpint · 10-20-2019, 12:41 PM

I got a 20 inch all season run flat, ski trip

Aimster82 · 10-20-2019, 01:34 PM

I have 22" and it is very comfy. However, it probably has a lot to do with my air suspension.

My X3 for comparison with 21" RFT with no air suspension is a harsh ride.

Yogujuhere · 10-20-2019, 01:49 PM

Quote:

Originally Posted by Aimster82

I have 22" and it is very comfy. However, it probably has a lot to do with my air suspension.

My X3 for comparison with 21" RFT with no air suspension is a harsh ride.

I'd agree that it has quite a bit to do with the air suspension =)

The X3 in particular has a pretty harsh ride comparatively to all the different suspension choices of the X5.

Gtz1wickedest · 10-20-2019, 04:42 PM

Quote:

Originally Posted by MystroX5

Are you going to drive in mixed weather (snow, sleet, cold temps)??

No I have another suv for my daily. But if you plan on driving with the 22s in the winter you can put on some all season tires that pirelli makes

Bigtop · 10-27-2019, 07:16 PM

Well now I am starting to change my mind.

Still have time to change the wheels as my build got delayed because I ordered Ivory White /Night Blue Full Merino leather. Guess it held back my production.

Since I am pretty my ordering everything EXCEPT for night vision, parking assistance, air suspension ( I prefer harder core handling), glass controls, anthracite headliner, rear seat entertainment, Bowers and Wilkins, I thought what the heck, I should just go with the 22" wheels.

I will get Tirerack 20" snow wheels.

The 22" are non-runflats, that are actually cheaper to replace than 21" run-flats. Not by much, but that is my excuse!

AlexTheGiant21 · 10-28-2019, 01:07 AM

Quote:

Originally Posted by Bigtop

Well now I am starting to change my mind.

Still have time to change the wheels as my build got delayed because I ordered Ivory White /Night Blue Full Merino leather. Guess it held back my production.

Since I am pretty my ordering everything EXCEPT for night vision, parking assistance, air suspension ( I prefer harder core handling), glass controls, anthracite headliner, rear seat entertainment, Bowers and Wilkins, I thought what the heck, I should just go with the 22" wheels.

I will get Tirerack 20" snow wheels.

The 22" are non-runflats, that are actually cheaper to replace than 21" run-flats. Not by much, but that is my excuse!

I wonder if they will let you change it. IIRC, full merino was also considered an individual option. If so, your vehicle is locked in and cannot be edited it. I could be wrong though! Let us know!

champkindwhammy · 10-28-2019, 09:40 AM

Black rims in 22". No other decision needed 😎

Jefflikescars · 10-29-2019, 12:01 PM

One thing to be aware of - winter or even all season options on the 22's are very, very limited.

After I got my X7 M50i with the 22's, BMW told me I was required to put on either all seasons or winters (something about rules of leasing and the 22's only coming with summer tires). Then they told me there were literally no all season or winter tires that fit the rear wheels. Told me I would have to order 21" wheels with tires, which would be $4k or $5k.

Eventually found a tire that will work, but it's 315/30/22, which is a very low sidewall.

If I could do it over again I'd probably go 21's.

10-19-2019, 09:48 PM	#1
Bigtop Private First Class 41 Rep 159 Posts Drives: 2020 G05 M50i Join Date: Nov 2013 Location: Camelot iTrader: (0)	G05 M50i 21" vs. 22" wheels? 21" wheels have run flats, 22" wheels do not. Run flats have stiffer sidewalls by design. 22" wheels will have less rubber tire height. Which ones will have the stiffer ride? 21" with run flats will have stiffer and more rubber protection/insulation(tire height) for getting rim damage from rough roads, correct?
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10-20-2019, 06:13 AM	#2
Ninefourteener Major 1340 Rep 1,238 Posts Drives: 2020 X5 M50i, 2020 Alfa 4C Join Date: Sep 2019 Location: American in Belgium iTrader: (0)	Yes... 21s will have a taller sidewall, and more protection frim pothole damage. I ordered the 21s for that very reason. I'm going off memory..... but if I recall correctly, the tire sizes for 21s are; 275/40/21 - front 315/35/21 - rear And for 22s, they are: 275/35/22 - front 315/30/22 - rear
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10-20-2019, 07:06 AM	#3
Boxer Private 63 Rep 77 Posts Drives: 2008 e92 M3 6spd Join Date: Dec 2017 Location: Chicago, IL iTrader: (0)	The 22” are non-run flat and they provide a nice comfortable ride from my limited experience (~300mi). I’ve not driven the 21” but that is what I ordered for the reasons above—some Boston roads are great, some not so much. At $400-$500 for these big tires, a little extra pothole protection was the deciding factor.
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10-20-2019, 07:51 AM	#4
Gtz1wickedest Lieutenant 647 Rep 442 Posts Drives: 2020 BMW X5 Join Date: Aug 2015 Location: NYC iTrader: (1)	I have the 22s in NYC and rides so much better than my f15 with 20 run flats but I also have air suspension which makes it better
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10-20-2019, 08:50 AM	#5
MystroX5 Major General 6284 Rep 5,319 Posts Drives: 2020 X7 M50i/ 911 Join Date: Dec 2018 Location: Central Pa. iTrader: (0)	Are you going to drive in mixed weather (snow, sleet, cold temps)??
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10-20-2019, 11:44 AM	#7
Yogujuhere Private 70 Rep 84 Posts Drives: X5 M50i, M850i Coupe Join Date: Sep 2012 Location: Longisland iTrader: (0)	RFT = Run-Flat NonRFT = Non Run-Flat Getting stuck on the side of the road with a 5000 lb truck in the rain and changing to a small spare tire in a suit wasn't what I would call the highlight of my day last winter when I opted for the Non-RFT on my F15. Keep in mind that RFT technology has gotten a LOT better compared to what it was even 5 years ago. The gap between RFT and NonRFT in terms of comfort has become a lot closer. This time around, I'm going with the RFT w/21's. Peace of mind goes a long way.
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10-20-2019, 12:41 PM	#8
jumpingpint Private First Class 37 Rep 110 Posts Drives: BMW X5 50i 2017 Join Date: Sep 2019 Location: California iTrader: (0)	I got a 20 inch all season run flat, ski trip
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10-20-2019, 01:34 PM	#9
Aimster82 Lieutenant 225 Rep 599 Posts Drives: 2018 X3 M40i 2019 BMW X5 5.0 Join Date: Apr 2018 Location: Virginia iTrader: (0)	I have 22" and it is very comfy. However, it probably has a lot to do with my air suspension. My X3 for comparison with 21" RFT with no air suspension is a harsh ride.
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10-27-2019, 07:16 PM	#12
Bigtop Private First Class 41 Rep 159 Posts Drives: 2020 G05 M50i Join Date: Nov 2013 Location: Camelot iTrader: (0)	Well now I am starting to change my mind. Still have time to change the wheels as my build got delayed because I ordered Ivory White /Night Blue Full Merino leather. Guess it held back my production. Since I am pretty my ordering everything EXCEPT for night vision, parking assistance, air suspension ( I prefer harder core handling), glass controls, anthracite headliner, rear seat entertainment, Bowers and Wilkins, I thought what the heck, I should just go with the 22" wheels. I will get Tirerack 20" snow wheels. The 22" are non-runflats, that are actually cheaper to replace than 21" run-flats. Not by much, but that is my excuse!
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10-28-2019, 09:40 AM	#14
champkindwhammy ChampKind 46 Rep 74 Posts Drives: 2016 550iM Join Date: Jan 2017 Location: Fort Lauderdale iTrader: (0)	Black rims in 22". No other decision needed 😎
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10-29-2019, 12:01 PM	#15
Jefflikescars Private First Class 91 Rep 102 Posts Drives: X7 M50i, Navigator, Mod Y Perf Join Date: Jan 2019 Location: Park City, UT iTrader: (0)	One thing to be aware of - winter or even all season options on the 22's are very, very limited. After I got my X7 M50i with the 22's, BMW told me I was required to put on either all seasons or winters (something about rules of leasing and the 22's only coming with summer tires). Then they told me there were literally no all season or winter tires that fit the rear wheels. Told me I would have to order 21" wheels with tires, which would be $4k or $5k. Eventually found a tire that will work, but it's 315/30/22, which is a very low sidewall. If I could do it over again I'd probably go 21's.
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