The F20 Alloy Wheel Thread

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d0ctorj3kyll
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Re: The F20 Alloy Wheel Thread

Post by d0ctorj3kyll » Tue Jan 30, 2018 7:48 am

Hi all, first time poster! How very exciting XD (sorry for the wall of text, just trying to give as much info as possible)

I've just taken delivery of my 5-door M140i and I'm looking at a set of APEX ARC-8 wheels. My goal is F 245 / R 265 (up 20mm on stock F&R) much like sootyvrs did with a set of Advan wheels on page 5 of this thread.

Like sooty's car, I will eventually be running KW suspension - the DDC plug and play package, likely on Eibach springs. I know this will lower the car so I need to take that into account for rubbing. Also planning the M4 LCA/TS mods.

APEX have three wheels which look suitable:

Front - 18x8.5j ET 38 running 245/35
Rear - 18x9j ET 42 -OR- 18x9.5j ET 58 running 265/35

APEX customer support, my BMW specialist upgrade mechanic, some local tyre and wheel fitters and other forums have all given me somewhat conflicting info so I was hoping you lovely people could give me a more conclusive answer to what will and won't work! Also need to remain legal (avoid poking etc) so I don't void my insurance or attract unwanted attention from the constabulary haha...

APEX think the 265 rears will be fine on the 9.5j wheels with 3 to 5mm spacers (I would rather run spacers than start trimming fender liners and shock dust boots). My mechanic doesn't seem keen on the 265s and keeps suggesting 255s, but he hasn't made mention of using spacers. What are your thoughts - would the 9j or 9.5j wheels fit with 265s on the rear and the KW suspension etc?

The front is more complicated. APEX recommend 2 degrees negative camber for the 245s to fit. My mechanic can make that happen using camber plates (LCA/TS mod would only provide about 1 degree) but thinks 2 degrees would be too much for regular road use. Would there be some combination of spacers, with or without the M4 LCA/TS mods, that could get the 245s to fit up front? There is also the option of an 18x8.5j ET 45, don't know if that would be of any help?

Though they aren't the most common things out there, I've seen a few 245/265 setups on the web so I know it's doable. If anyone can give me a solid solution for this fitment on these wheels they shall have my undying gratitude. And, should they ever find themselves in Melbourne, cake. Lots of cake :D

Thanks in advance!

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Re: The F20 Alloy Wheel Thread

Post by marco_polo » Tue Jan 30, 2018 8:23 am

First off, be careful with 'adding camber' as it's not always equal. Camber plates make fitting wide tyres easier as they do create some room. The M4 LCA/TS are much longer than stock, their only job is to swing the whole hub/wheel/tyre assembly outwards. This gives you more track width (and a little more camber as a side effect), but much less arch clearance.

2 degrees neg camber is ok for fast road use, shouldn't wear weirdly or impact your braking.

For the rear you need around ET49+ to get a 265mm tyre on without some arch mods, so the ET58's sound like a good fit.
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Re: The F20 Alloy Wheel Thread

Post by d0ctorj3kyll » Tue Jan 30, 2018 8:26 am

Wow thanks for the fast reply!

So camber plates rather than spacers up front and you reckon I'd be okay with 245s on the APEX wheels?

And the ET58 tears would be okay without spacers too?

Thanks again :)

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Re: The F20 Alloy Wheel Thread

Post by marco_polo » Tue Jan 30, 2018 8:33 am

You might want to fine tune the look of the rear poke with a 3 or 5mm wheel spacer, optional though.

ET38 fronts with camber plates should fit nicely, if you went 8.5" ET45 you'd probably need a thin spacer too, to prevent the tyre rubbing on the damper.

Which camber plates are you going for, out of curiosity? Millway?
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Re: The F20 Alloy Wheel Thread

Post by marco_polo » Tue Jan 30, 2018 8:59 am

Crude sketch of the effect of fitting the longer M4 LCA's:

Image
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Re: The F20 Alloy Wheel Thread

Post by d0ctorj3kyll » Tue Jan 30, 2018 10:16 am

Thanks for your efforts mate! The info is hugely appreciated!

To be quite honest I haven't spoken to my mechanic about camber plates as yet as I was hoping to avoid having to use one at all. Ideally I wanted to fit the wheels using some spacers without too much else but I guess that won't be an option haha!

I'll steer clear of the LCAs though, and try for a fitment as you suggested :)

Happy to hear from any other opinions as well, always open to options!

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Re: The F20 Alloy Wheel Thread

Post by marco_polo » Tue Jan 30, 2018 10:21 am

I'm wondering if you need the camber plates at all?

I reckon on a stock front end, 245mm tyre at 8.5j ET38 should just clear. You could always add the Millway's later on, if you wanted more camber.
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Re: The F20 Alloy Wheel Thread

Post by Blind Pugh » Tue Jan 30, 2018 10:36 am

d0ctorj3kyll wrote:
Tue Jan 30, 2018 7:48 am
I will eventually be running KW suspension - the DDC plug and play package, likely on Eibach springs. I know this will lower the car so I need to take that into account for rubbing. Also planning the M4 LCA/TS mods.

APEX have three wheels which look suitable:

Front - 18x8.5j ET 38 running 245/35
Rear - 18x9j ET 42 -OR- 18x9.5j ET 58 running 265/35

APEX customer support, my BMW specialist upgrade mechanic, some local tyre and wheel fitters and other forums have all given me somewhat conflicting info so I was hoping you lovely people could give me a more conclusive answer to what will and won't work! Also need to remain legal (avoid poking etc) so I don't void my insurance or attract unwanted attention from the constabulary haha...

APEX think the 265 rears will be fine on the 9.5j wheels with 3 to 5mm spacers (I would rather run spacers than start trimming fender liners and shock dust boots). My mechanic doesn't seem keen on the 265s and keeps suggesting 255s, but he hasn't made mention of using spacers. What are your thoughts - would the 9j or 9.5j wheels fit with 265s on the rear and the KW suspension etc?

The front is more complicated. APEX recommend 2 degrees negative camber for the 245s to fit. My mechanic can make that happen using camber plates (LCA/TS mod would only provide about 1 degree) but thinks 2 degrees would be too much for regular road use. Would there be some combination of spacers, with or without the M4 LCA/TS mods, that could get the 245s to fit up front? There is also the option of an 18x8.5j ET 45, don't know if that would be of any help?

Though they aren't the most common things out there, I've seen a few 245/265 setups on the web so I know it's doable. If anyone can give me a solid solution for this fitment on these wheels they shall have my undying gratitude. And, should they ever find themselves in Melbourne, cake. Lots of cake :D
KW DDC PnP on Eibachs ? - why ? - KW DDC comes with matched springs so not sure why you're wanting to mess up £2.5k worth of KW coilovers by using Eibach springs....

Fronts -

Standard LCA/TS - 8.5" et38mm c/w 245/35/18 tyres will be fine. Depending on how low you will go but with upgraded springs you may get to -1 to -1.2 deg -ve camber upfront with stand top mounts.

F8x LCA/TS - 8.5" et45mm c/w 3-5mm spacer & 245/35/18 tyres will be fine. My setup F8x LCA/TS + Birds B1S got me -2 deg front camber and as said already this is about the most to run as DD to retain braking contact patch etc. Benefits of more -ve camber & F8X LCA/TS are well documented on this forum

Rear -

9.5" et58mm c/w 265/30 or 35/18 will be fine
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Re: The F20 Alloy Wheel Thread

Post by d0ctorj3kyll » Tue Jan 30, 2018 10:35 pm

Okay so basically there's a good chance the 245/265 setup will work on the KWs without much extra in terms of camber plates or spacers. Great to hear! I guess if I stick with stock suspension as well that this will only serve to increase clearances and make the fitment easier again?

I assume "stand top mounts" was a typo for "standard"? (Not being a spelling Nazi, as I'm sure you can tell I'm still learning about all this stuff so I want to ensure that's not a different part haha!)

Would you be so kind as to direct me to the right section discussing the benefits of the F8x LCA/TS as you mentioned? I'd like to read some more about it :)

I'm strongly considering this mod, though if I can achieve some negative camber already with the upgraded suspension and avoid some costs and having to run spacers on the front that is also tempting.

More to think about as always!

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Re: The F20 Alloy Wheel Thread

Post by d0ctorj3kyll » Tue Jan 30, 2018 10:37 pm

Also marco_polo what wheels have you got in your photo? Are they VMRs? How do they compare to APEX wheels - heard they're good quality, but heavier?

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Re: The F20 Alloy Wheel Thread

Post by marco_polo » Wed Jan 31, 2018 12:01 am

I'm running BBS CH-R's, 18 x 8j ET40 fitted with 245/35 all round. Very nice quality, roll forged so nice and tough, I can smash them into potholes all day long.

They're also available in a 9" ET44 for people who want to run 255/35 rears, but have too little poke for your 265 plan I'm afraid.
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Re: The F20 Alloy Wheel Thread

Post by d0ctorj3kyll » Wed Jan 31, 2018 12:24 am

Ah yes I've heard great things about the CH-R's, was strongly considering a set myself but I fell in love with the old CSL-style 8-spoke wheels and the BBS's only have 7 spokes so not quite the same! They are amazing looking wheels, though, and awesome quality. Much respect!

Now to plough onward into the depths of understanding camber, caster, the LCA/TS mods and what exactly the KW system I am looking at will do to my setup haha XD

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Re: The F20 Alloy Wheel Thread

Post by definitelydan » Wed Jan 31, 2018 6:15 am

hi all,

i'm considering swapping out my stock 16" rims for a set of OZ Leggera HLT in gloss black, though i was advised by the importer that the rims might stick out slightly from the front wheel arches. They are 8x18" with an offset of 45.

Or would i be better off with the OZ Ultraleggera in matte black which have more sizing options:

7.5x18" with offset of 45
8x18" with offset of 34 or 40
9x18" with offset of 40

I'm on the stock suspension setup and the color of my car is mediterranean blue

thanks in advance!
Daniel

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Re: The F20 Alloy Wheel Thread

Post by marco_polo » Wed Jan 31, 2018 7:57 am

18x8j ET45 will fit just fine, an OEM style fit, no poking or rubbing.

OZ 'HLT range' are nice quality, very tough.
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Re: The F20 Alloy Wheel Thread

Post by definitelydan » Wed Jan 31, 2018 8:18 am

marco_polo wrote:
Wed Jan 31, 2018 7:57 am
18x8j ET45 will fit just fine, an OEM style fit, no poking or rubbing.

OZ 'HLT range' are nice quality, very tough.
Cool thanks! I was under the impression they were fine as well, but the chap at the rim shop told me the tyres might rub against the inner wheel wells and i might experience understeer while doing U-turns????

:? :?

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