KWv3 with 295/30/20 rears rubbing

Unspec · 05-16-2021, 08:30 PM

Anyone else experience this issue? Installed v3's for xDrive cars and the rears are rubbing now on deep-ish dips, even when above KW's recommended Distance A (distance from nearest bolt to top of lower spring perch). 95% of the time it's not rubbing, but I can hear the dreaded squeal on those dips. I'm guessing I'm just running too wide a tire with too much offset, rears are 343M (20x10 ET 34) with 295/30/20 tires.

Any potential suggestions? Not against going down to a 285 but would like to explore other options as well.

Sylverlee · 05-16-2021, 09:54 PM

Happened to me on my RWD. Running 343s on Megan Coilovers. Running 285/30/20. I originally ran Hankooks but switched to Michelin A/S 3+ which has a really square profile. Had to raise the car 1/2inch almost

Unspec · 05-16-2021, 10:01 PM

Quote:

Originally Posted by Sylverlee

Happened to me on my RWD. Running 343s on Megan Coilovers. Running 285/30/20. I originally ran Hankooks but switched to Michelin A/S 3+ which has a really square profile. Had to raise the car 1/2inch almost

You rubbed with 285's as well?

Sylverlee · 05-16-2021, 10:42 PM

Quote:

Originally Posted by Unspec

You rubbed with 285's as well?

I did. There’s too much poke in the rears with Michelin’s

Unspec · 05-16-2021, 10:52 PM

Quote:

Originally Posted by Sylverlee

I did. There’s too much poke in the rears with Michelin’s

Dang. Maybe some very minor fender pulling is in my future.

Sylverlee · 05-16-2021, 11:23 PM

Quote:

Originally Posted by Unspec

Dang. Maybe some very minor fender pulling is in my future.

Maybe add some camber? I was rubbing less before my alignment. Guy put it to 1.4 in the rears which is on the low end. Maybe 2.0 would make a difference I suspect

Unspec · 05-16-2021, 11:48 PM

Quote:

Originally Posted by Sylverlee

Maybe add some camber? I was rubbing less before my alignment. Guy put it to 1.4 in the rears which is on the low end. Maybe 2.0 would make a difference I suspect

Yea, I'll talk to my alignment/suspension guy and get his input.

Blue Angel · 05-17-2021, 06:20 AM

Thanks for posting, guys. I've been looking into wheels for some time and I don't get how the 343m can work on an F10 with 295's even though some claim they do. Seeing they rub even with a fat 285 confirms my suspicions. This has saved me a trip to go look at a set!

Unspec · 05-17-2021, 07:48 AM

Quote:

Originally Posted by Blue Angel

Thanks for posting, guys. I've been looking into wheels for some time and I don't get how the 343m can work on an F10 with 295's even though some claim they do. Seeing they rub even with a fat 285 confirms my suspicions. This has saved me a trip to go look at a set!

343M's will run fine on stock suspension, or a stiffer/linear spring set up. I never had issues with my Silvers coilovers because they were linear and a lot stiffer.

Sylverlee · 05-17-2021, 01:06 PM

Yeah easy solution is to not slam it. I was at 0 fingers in the rear.. now 1 finger.

Unspec · 05-17-2021, 03:28 PM

Quote:

Originally Posted by Sylverlee

Yeah easy solution is to not slam it. I was at 0 fingers in the rear.. now 1 finger.

I'm at like 3 fingers already and it's still rubbing :/

Blue Angel · 05-19-2021, 05:38 AM

Quote:

Originally Posted by Unspec

Quote:

Originally Posted by Sylverlee

Yeah easy solution is to not slam it. I was at 0 fingers in the rear.. now 1 finger.

I'm at like 3 fingers already and it's still rubbing :/

Wow, sounds like the Silvers were a much stiffer setup than the V3's! Remind me, you had the off-the-shelf 12k/8k rates and no Swift upgrade, correct?

Unspec · 05-19-2021, 08:57 AM

Quote:

Originally Posted by Blue Angel

Wow, sounds like the Silvers were a much stiffer setup than the V3's! Remind me, you had the off-the-shelf 12k/8k rates and no Swift upgrade, correct?

Yep, I stayed at the default spring rates. I'm not sure what the rates were, but 12k and 8k sounds about right. I think the real problem in this story is the 343M's offset - ET34 is just a tad bit too aggressive for KW's/softer spring rates

Sylverlee · 05-19-2021, 11:34 AM

Quote:

Originally Posted by Unspec

Yep, I stayed at the default spring rates. I'm not sure what the rates were, but 12k and 8k sounds about right. I think the real problem in this story is the 343M's offset - ET34 is just a tad bit too aggressive for KW's/softer spring rates

Megan's are 10k and 4.5k....... There has to be something wrong here. I am running 1 finger.

Unspec · 05-19-2021, 04:48 PM

Quote:

Originally Posted by Sylverlee

Megan's are 10k and 4.5k....... There has to be something wrong here. I am running 1 finger.

I'm running 295's, which is probably why we have different "fingers"

Mine might be closer to 2 fingers actually.

Hoa · 05-20-2021, 10:49 AM

Have you adjusted the rebound? Also, adding 650i rear sway may help as well. Your ride may be slightly more stiff as a result though

Unspec · 05-20-2021, 11:46 AM

Quote:

Originally Posted by Hoa

Have you adjusted the rebound? Also, adding 650i rear sway may help as well. Your ride may be slightly more stiff as a result though

I already have the 650i rear sway anyhow. I'll see if going up a click will help.

Blue Angel · 05-20-2021, 12:36 PM

Question just for my curiosity, are you rubbing just the inner fender liner, or are you rubbing the steel fender?

Unspec · 05-20-2021, 02:00 PM

Quote:

Originally Posted by Blue Angel

Question just for my curiosity, are you rubbing just the inner fender liner, or are you rubbing the steel fender?

Steel fender, rubbing half way down the tire sidewall. Will post pictures later

lsturbointeg · 05-20-2021, 03:54 PM

KWv1's sitting on 21x11 -38mm 295/25r21 no rubbing!

Blue Angel · 05-20-2021, 03:56 PM

How much camber?

Sylverlee · 05-20-2021, 05:59 PM

Can't 100% tell from that photo, but I feel like 343m wheels have more poke. But your wheels are wider, so that would be unusual

05-16-2021, 08:30 PM	#1
Unspec Colonel 1295 Rep 2,587 Posts Drives: 2015 BMW 535xi Join Date: Apr 2019 Location: DMV iTrader: (1)	KWv3 with 295/30/20 rears rubbing Anyone else experience this issue? Installed v3's for xDrive cars and the rears are rubbing now on deep-ish dips, even when above KW's recommended Distance A (distance from nearest bolt to top of lower spring perch). 95% of the time it's not rubbing, but I can hear the dreaded squeal on those dips. I'm guessing I'm just running too wide a tire with too much offset, rears are 343M (20x10 ET 34) with 295/30/20 tires. Any potential suggestions? Not against going down to a 285 but would like to explore other options as well. __________________ 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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05-16-2021, 09:54 PM	#2
Sylverlee Captain 150 Rep 965 Posts Drives: White 535i M-Sport, 911 GTS Join Date: Jul 2010 Location: Irvine iTrader: (2)	Happened to me on my RWD. Running 343s on Megan Coilovers. Running 285/30/20. I originally ran Hankooks but switched to Michelin A/S 3+ which has a really square profile. Had to raise the car 1/2inch almost Last edited by Sylverlee; 05-16-2021 at 09:55 PM.. Reason: Typi
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05-17-2021, 06:20 AM	#8
Blue Angel Major 996 Rep 1,034 Posts Drives: 2011 323i and 2016 535d Join Date: Mar 2011 Location: Ottawa, ON iTrader: (0)	Thanks for posting, guys. I've been looking into wheels for some time and I don't get how the 343m can work on an F10 with 295's even though some claim they do. Seeing they rub even with a fat 285 confirms my suspicions. This has saved me a trip to go look at a set!
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05-17-2021, 01:06 PM	#10
Sylverlee Captain 150 Rep 965 Posts Drives: White 535i M-Sport, 911 GTS Join Date: Jul 2010 Location: Irvine iTrader: (2)	Yeah easy solution is to not slam it. I was at 0 fingers in the rear.. now 1 finger.
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05-20-2021, 10:49 AM	#16
Hoa Major 513 Rep 1,356 Posts Drives: BMW Join Date: May 2010 Location: GA iTrader: (9)	Have you adjusted the rebound? Also, adding 650i rear sway may help as well. Your ride may be slightly more stiff as a result though
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05-20-2021, 12:36 PM	#18
Blue Angel Major 996 Rep 1,034 Posts Drives: 2011 323i and 2016 535d Join Date: Mar 2011 Location: Ottawa, ON iTrader: (0)	Question just for my curiosity, are you rubbing just the inner fender liner, or are you rubbing the steel fender?
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05-20-2021, 03:54 PM	#20
lsturbointeg Lieutenant General 9153 Rep 14,522 Posts Drives: 2011 535i Jet Black Join Date: Aug 2014 Location: Asian lost in OH iTrader: (0)	KWv1's sitting on 21x11 -38mm 295/25r21 no rubbing! __________________ ~F90Conversion~21"3Piece Forged AvantGardeWheels~KWV1Coilovers~CQUENCE slotted/drilled rotors~GoodridgeStainlesslines~MeisterschaftQuadEx haust~Akrapovic 4"tips~VRSF DP~VRSF CP~TurboSmart BOV~K&N filter~CarbonFiberExteriorComponents~GladenAlphaCo mponents~MatchUp7BMW~Punch P300-12T~ Follow me on Instagram: lsturbointeg
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05-20-2021, 03:56 PM	#21
Blue Angel Major 996 Rep 1,034 Posts Drives: 2011 323i and 2016 535d Join Date: Mar 2011 Location: Ottawa, ON iTrader: (0)	How much camber?
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05-20-2021, 05:59 PM	#22
Sylverlee Captain 150 Rep 965 Posts Drives: White 535i M-Sport, 911 GTS Join Date: Jul 2010 Location: Irvine iTrader: (2)	Can't 100% tell from that photo, but I feel like 343m wheels have more poke. But your wheels are wider, so that would be unusual
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