Yet Another 20" Wheel Fitment Thread

spielnicht · 07-26-2020, 02:54 PM

I've already gone through all of the previous threads and made some sense out of the at times contradictory info, but I'm still not sure what the best tire option is for a 550i xDrive.

Current 19 Setup:

Front: 8.5x19 et33
Rear: 8.5x19 et33

New 20" Wheel Setup:

Front: 9x20 ET35
Rear: 10x20 ET35

550i xDrive 20" Recommended Setup:

While this is recommended size by BMW and lots of members here (or 285 for rear), are the tires wide enough for new setup?

Front: 8.5x20 et33 / 245/35
Rear: 9x20 et44 / 275/30

M5 20" Recommended Setup:

While tire width same as new setup, I’ve read these tire sizes will rub.

Front: 9x20 ET34 / 265/35
Rear: 10x20 ET34 / 295/30

Here is what I'm looking for in order of importance:

Tires not to rub or touch the fender walls especially since car will be slightly lowered on KWs (at the higher end of KWs recommended height setting since this is a daily driver)
Tires to be flushed with wheel sides (not a fan of stretched tire look)
Wheel as flush as possible with fenders without compromising the 2 bullets above

Really appreciate the input. Have been reading and researching all weekend.

Unspec · 07-26-2020, 09:05 PM

If you're lowering, your best bet is 245/35/20 and 285/30/20. I have rear 295/30/20 on the M5 343M wheels and it's already pretty tight on stock suspension, will probably rub if you lower.

Since you're xDrive, you can't have the total diameter of the two wheels differ by more than 1%

spielnicht · 07-27-2020, 03:55 PM

Thanks for the info. Pulled the trigger and went with the 245/285 setup. Can't wait for the wheels and tires to come in.

Quote:

Originally Posted by Unspec

If you're lowering, your best bet is 245/35/20 and 285/30/20. I have rear 295/30/20 on the M5 343M wheels and it's already pretty tight on stock suspension, will probably rub if you lower.

Since you're xDrive, you can't have the total diameter of the two wheels differ by more than 1%

JayN54Rains · 04-23-2022, 09:54 AM

Yo, what size would you go with then? Im xdrive and need to buy tires with this set up.
The dude was running 20x10et25 squared. But i need tire size. wondering if I should do a squared set up or a staggard one. if staggard what size?

2016BlkBimmer · 05-09-2022, 08:02 PM

Will a 20x9 ET: 30 work on a 245/35/20 squared setup work on a 2016 F10?

ey2001 · 05-09-2022, 09:03 PM

I have 255/35/20 20x9 et25 and 295/30/20 20x10 et40 and on kw v3 and I don't rub… I'm not slammed but pretty low…

07-26-2020, 02:54 PM	#1
spielnicht Petrolhead 440 Rep 806 Posts Drives: 24 X3 M40i/14 550i/08 Z4 3.0si Join Date: Apr 2017 Location: Virginia iTrader: (3) Garage List 2008 BMW Z4 3.0si [9.67] 2014 BMW 550i [6.00] 2024 BMW X3 M40i [9.25]	Yet Another 20" Wheel Fitment Thread I've already gone through all of the previous threads and made some sense out of the at times contradictory info, but I'm still not sure what the best tire option is for a 550i xDrive. Current 19 Setup: Front: 8.5x19 et33 Rear: 8.5x19 et33 New 20" Wheel Setup: Front: 9x20 ET35 Rear: 10x20 ET35 550i xDrive 20" Recommended Setup: While this is recommended size by BMW and lots of members here (or 285 for rear), are the tires wide enough for new setup? Front: 8.5x20 et33 / 245/35 Rear: 9x20 et44 / 275/30 M5 20" Recommended Setup: While tire width same as new setup, I’ve read these tire sizes will rub. Front: 9x20 ET34 / 265/35 Rear: 10x20 ET34 / 295/30 Here is what I'm looking for in order of importance: Tires not to rub or touch the fender walls especially since car will be slightly lowered on KWs (at the higher end of KWs recommended height setting since this is a daily driver) Tires to be flushed with wheel sides (not a fan of stretched tire look) Wheel as flush as possible with fenders without compromising the 2 bullets above Really appreciate the input. Have been reading and researching all weekend. __________________ . 2024 X3 M40i 2014 550i 2008 Z4 3.0si 6MT 2011 Z4 35si (sold) Last edited by spielnicht; 07-26-2020 at 03:13 PM..
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07-26-2020, 09:05 PM	#2
Unspec Colonel 1300 Rep 2,590 Posts Drives: 2015 BMW 535xi Join Date: Apr 2019 Location: DMV iTrader: (1)	If you're lowering, your best bet is 245/35/20 and 285/30/20. I have rear 295/30/20 on the M5 343M wheels and it's already pretty tight on stock suspension, will probably rub if you lower. Since you're xDrive, you can't have the total diameter of the two wheels differ by more than 1% __________________ 2015 BMW 535xi Bootmod3 Stage 2 \| ER charge pipe \| ER Catted DP \| Remus Exhaust \| Gplus FMIC \| KW V3 \| Turner Monoball thrust arm bushings \| Wallet regrets ISTA VM Setup/Tutorial
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04-23-2022, 09:54 AM	#4
JayN54Rains New Member 0 Rep 8 Posts Drives: BMWe90335xi Join Date: Apr 2019 Location: Minneapolis iTrader: (0)	Yo, what size would you go with then? Im xdrive and need to buy tires with this set up. The dude was running 20x10et25 squared. But i need tire size. wondering if I should do a squared set up or a staggard one. if staggard what size?
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05-09-2022, 08:02 PM	#5
2016BlkBimmer Private First Class 88 Rep 107 Posts Drives: 2025 BMW X5 xDrive40i Join Date: Mar 2016 Location: DMV (Maryland) iTrader: (0)	Will a 20x9 ET: 30 work on a 245/35/20 squared setup work on a 2016 F10? __________________ Coming Soon - 2025 G05 X5 xDrive40i, Black Sapphire Metallic Sold - 2021 G01 X3 M40i, Black Sapphire Metallic Sold - 2016 F10 535i xDrive, JET BLACK
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05-09-2022, 09:03 PM	#6
ey2001 Captain 310 Rep 716 Posts Drives: F10 535i 6spd Join Date: Apr 2007 Location: la iTrader: (0)	I have 255/35/20 20x9 et25 and 295/30/20 20x10 et40 and on kw v3 and I don't rub… I'm not slammed but pretty low…
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