M140i - 405M Wheels and Motech/Eibach or H&R Drop

Fed up with your run flats? Fancy a change of rubber?
Looking a new set of wheels? Get all your tyre/alloys info in here

Moderators: babybmwadmin, marco_polo, Producethis, Lambster, Rich196

User avatar
bm140i
Junior Member
Junior Member
Posts: 38
Joined: Wed Sep 13, 2017 10:02 am

M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by bm140i » Mon Sep 18, 2017 1:06 pm

First post for me - so treat with care please :roll:

Last week I traded in the M4 :cry: as I needed some urgent wedding funds (under the thumb I know) and came away from Williams BMW with a white M140i. As like a lot of people have suggested on here, the M140i looks so tame when standard, that said, that might be one of its advantages bearing in mind the performance in a straightline is amazing. I'm a fan of the 405m 19's alloys and wanted to know what everyone's thoughts are about the required drop. Some are suggesting the H&R 15mm (M235i springs), which would be a nice, subtle drop. Whilst others prefer Mike/Motechs Eibach springs (25mm front, 20mm back), but is this too much of a drop on 19's. Mike actually dropped my M4, so I know he's great at what he does. If I was staying on the standard 18's set-up then Motech would be my only choice. However I'm looking at going up a wheel size. Also trying to get anyone to fit the H&R's is almost impossible (as they are not recommended by H&R for the M140i, albeit they have the same set-up and part numbers). By the way I'm based up in North Manchester. Any suggestions as to which looks best.

I'm actually booked in at Costwold this Friday and having the rear spoiler, side blades, front kidney (black) grills, carbon mirrors and the 405m's fitted. I might hold off on the wheels if feedback is to stay on the 18's. Got a great deal for the pack, but the car for sure will need a drop.

Oh and Mike at Motech has suggested max 12mm spacers if upping to the 19's.

I know this subject has probably been picked to hell and back, but as always when spending this sort of cash (when it should be all for the wedding, don't tell the missus :lol: ) then you just want to be sure.

Any advice, is much appreciated guys.

User avatar
sootyvrs
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 5843
Joined: Thu Jun 26, 2008 4:00 pm
Location: The Boro

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by sootyvrs » Mon Sep 18, 2017 1:33 pm

I think that the H&R -15's and Motech Eibachs are similar in drop..

Assuming Motech Eibach as the same rates as the Pro Kit the spring rates below might give some clue of stiffness differences.

As to 19's... the tyre diameter is near enough the same as 18's so don't think it's a factor unless you want a softer sprung to negate the harsher ride comfort of lower profile tyres
marco_polo wrote:
Mon Jan 11, 2016 4:13 pm
marco_polo wrote:I've 'calculated' the following (assuming equal plain carbon steel springs):

OEM M135i Front = 90 lb/inch
OEM M135i Rears = 383 lb/inch

OEM M235i Front = 141 lb/inch
OEM M235i Rears = 417 lb/inch

H&R M135i Front = 145 lb/inch
H&R M135i Rear = 348 lb/inch

H&R M235i Front = 131 lb/inch
H&R M235i Rear = 392 lb/inch

Eibach Front = 120 lb/inch
Eibach Rear = 384 lb/inch

'AC Schnitzer' Front = 120 lb/inch
'AC Schnitzer' Rear = 384 lb/inch

Meister R Front = 335 lb/inch
Meister R Rear = 447 lb/inch

Not 100% accurate for the front springs as they tend to be pig-tailed banana springs. Should be pretty accurate on the rears though.
My BabyBMW's with some Pork inbetween :D
2017 F21 BMW M140i Auto
2015 F56 Mini Cooper S Man
2013 F20 BMW M135i Auto
2010 R56 Mini Cooper D Man
2007 E87 BMW 130i Man

User avatar
marco_polo
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 47059
Joined: Tue Apr 06, 2010 9:40 am
Location: Omnipresent Post Whore

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by marco_polo » Mon Sep 18, 2017 2:13 pm

bm140i wrote:
Mon Sep 18, 2017 1:06 pm
....is this too much of a drop on 19's. Mike actually dropped my M4, so I know he's great at what he does. If I was staying on the standard 18's set-up then Motech would be my only choice. However I'm looking at going up a wheel size.
sootyvrs wrote:
Mon Sep 18, 2017 1:33 pm

As to 19's... the tyre diameter is near enough the same as 18's so don't think it's a factor unless you want a softer sprung to negate the harsher ride comfort of lower profile tyres
This.

18" and 19" are the same size, once you've fitted the 19's with the correct lower profile tyres. Not sure what the OP means? :?

Anyhoo, if you are thinking of 405's, be very wary if buying them directly from a main dealer. They tend to like selling packages with Runcrap tyres fitted, which are obviously best avoided if you like to drive properly.
Silver F21 M135i - ManBox - HK - Adaptive + Eibach Pro's - BBS CH-R's - BMWP Drexler LSD - TMC Piggyback - M4 LCA's - aFe Dry Filter

Please help the Mod's by using the report [ ! ] button where appropriate

User avatar
bm140i
Junior Member
Junior Member
Posts: 38
Joined: Wed Sep 13, 2017 10:02 am

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by bm140i » Mon Sep 18, 2017 5:34 pm

Thank you for the initial feedback. I've heard rumours that if coming away from Runcraps into standard non-runcraps then your car insurance becomes null and void? Is this rumour a load of rubbish then?

I'll check with Cotswold tomorrow as to what tyres come with the package and if I have an option to buy rim only.

So it looks like Motech/Eibachs win - 25mm front and 20mm back shouldn't cause any rubbing issues then? Especially if I limit to a 12mm spacer front and back. I'm just concerned ride quality will be rubbish when coming down that far and then running on ultra thin,low profile tyres, worse again if runcraps as you state.

User avatar
marco_polo
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 47059
Joined: Tue Apr 06, 2010 9:40 am
Location: Omnipresent Post Whore

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by marco_polo » Mon Sep 18, 2017 5:50 pm

Double check with your insurer before any and all modifications from standard spec, including wheels, BMW bodykits, spacers, and tyres.

We've only every heard of one case of someone having insurance difficulties swapping to proper tyres, but I think that was BMW's own insurance (who wanted them star rated). M140i should come with proper Michelin tyres as standard (Runcraps were an optional extra), so proper Michelins shouldn't be an insurance headache.

I would be fitting Michelin MPS4S all round, which are available in the correct 225/35/19 & 245/30/19 sizes.
Silver F21 M135i - ManBox - HK - Adaptive + Eibach Pro's - BBS CH-R's - BMWP Drexler LSD - TMC Piggyback - M4 LCA's - aFe Dry Filter

Please help the Mod's by using the report [ ! ] button where appropriate

User avatar
bm140i
Junior Member
Junior Member
Posts: 38
Joined: Wed Sep 13, 2017 10:02 am

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by bm140i » Mon Sep 18, 2017 6:04 pm

Great advice - thank you.

I always declare to the insurers to be fair, but great to know runcraps were only an option with BMW. Who actually pays extra for runcraps? I remember my dreaded e92 days, 19" alloys and runcraps = endless welds to the damn wheels.

I'll get posting some before and afters soon enough and keep you all posted.

Think I'm set on Eibachs 25/20 and the 405M with some MPS4S shoes. I'll see if I can deal this out direct with Cotswold tomorrow.

Keep up the great work guys. Awesome forum.

Tricky401
Enthusiastic Member
Enthusiastic Member
Posts: 1814
Joined: Thu Feb 18, 2016 9:55 pm

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by Tricky401 » Mon Sep 18, 2017 7:45 pm

I have the 15mm h&r springs and ran the 19" 405m with 12mm spacer front and 15mm rear

The 405m will only be supplied with runflats. If you go for wheels only it works out less than £100 difference so they tyres are almost free even if they are runflats.

I didn't find the rude that harsh but coming from a lowered Astra vxr it was always going to be a softer ride

Now running 18s with no spacers. If needed a can post some pics when the 19s were fitted or search my user name
M135 5door, mineral Grey,black Dakota , auto, comfort pack + front Pdc, pro nav, adaptive sus, adaptive LEDs, reverse cam, sunroof, shadeband, sun protection, folding mirrors, load through, heated seats. First ever auto and BMW

User avatar
bm140i
Junior Member
Junior Member
Posts: 38
Joined: Wed Sep 13, 2017 10:02 am

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by bm140i » Mon Sep 18, 2017 7:48 pm

Out of interest, why have come back down to 18's?

Tricky401
Enthusiastic Member
Enthusiastic Member
Posts: 1814
Joined: Thu Feb 18, 2016 9:55 pm

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by Tricky401 » Mon Sep 18, 2017 7:52 pm

I plan to do more track days so the smaller wheel and slightly more focused cheaper tyres

Plus it gave me some cash for jb4 and a splitter

I have never seen/heard of anybody using runflats on track
M135 5door, mineral Grey,black Dakota , auto, comfort pack + front Pdc, pro nav, adaptive sus, adaptive LEDs, reverse cam, sunroof, shadeband, sun protection, folding mirrors, load through, heated seats. First ever auto and BMW

User avatar
marco_polo
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 47059
Joined: Tue Apr 06, 2010 9:40 am
Location: Omnipresent Post Whore

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by marco_polo » Mon Sep 18, 2017 7:58 pm

19's are very pretty, but low performance.

For road holding, you usually want the smallest & lightest wheel that will just fit over your brakes.
Silver F21 M135i - ManBox - HK - Adaptive + Eibach Pro's - BBS CH-R's - BMWP Drexler LSD - TMC Piggyback - M4 LCA's - aFe Dry Filter

Please help the Mod's by using the report [ ! ] button where appropriate

User avatar
bm140i
Junior Member
Junior Member
Posts: 38
Joined: Wed Sep 13, 2017 10:02 am

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by bm140i » Mon Sep 18, 2017 8:00 pm

Understand your logic. Unfortunately my track days are behind me.... Brisca F2 Stock Cars for 6 years, I certainly had my trills but Christ it was expensive. But yeah, runcraps on a track, is somehow a brain dead idea. Slicks for the track :)

I've seen your pictures on H&R 15mm and it was these pics that made me consider it as an option. It also shows that there was room (depending on taste) to drop a litte further at the back, which has pushed me to the Motechs/Eibachs. Just ordered them this evening and hoping to get fitted before my trip to Cotswold BMW on Friday. Went for the 12mm spacers as suggested by Mike, bearing in mind it was this set up that was tested out on his own M235i.

User avatar
bm140i
Junior Member
Junior Member
Posts: 38
Joined: Wed Sep 13, 2017 10:02 am

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by bm140i » Mon Sep 18, 2017 8:03 pm

marco_polo wrote:
Mon Sep 18, 2017 7:58 pm
19's are very pretty, but low performance.

For road holding, you usually want the smallest & lightest wheel that will just fit over your brakes.
I'm going for looks though. Performance for sure is lost on 19s but they fill the arches so much better. Pure aesthetic purposes only.

User avatar
sootyvrs
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 5843
Joined: Thu Jun 26, 2008 4:00 pm
Location: The Boro

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by sootyvrs » Mon Sep 18, 2017 8:48 pm

bm140i wrote:
Mon Sep 18, 2017 8:00 pm
which has pushed me to the Motechs/Eibachs. Just ordered them this evening
Hope you took advantage of the babybmw discount ;)

http://www.babybmw.net/viewtopic.php?f=50&t=103038
My BabyBMW's with some Pork inbetween :D
2017 F21 BMW M140i Auto
2015 F56 Mini Cooper S Man
2013 F20 BMW M135i Auto
2010 R56 Mini Cooper D Man
2007 E87 BMW 130i Man

User avatar
bm140i
Junior Member
Junior Member
Posts: 38
Joined: Wed Sep 13, 2017 10:02 am

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by bm140i » Wed Sep 20, 2017 11:53 am

Sure did :)

Next day arrival - thanks to Mike over at Motech. 405M alloys and other M Performance bits being fitted Friday at Cotswold BMW, springs and 12mm spacers fitted in Manchester on Sunday. Not long to wait 8)

Before and afters will be shared for sure.
20170920_113745_resized_1.jpg
20170920_113745_resized_1.jpg (209.64 KiB) Viewed 382 times
20170920_113730_resized_1.jpg
20170920_113730_resized_1.jpg (226.1 KiB) Viewed 382 times

motechmike
Experienced Member
Experienced Member
Posts: 209
Joined: Tue Jun 02, 2009 9:18 am

Re: M140i - 405M Wheels and Motech/Eibach or H&R Drop

Post by motechmike » Thu Sep 21, 2017 10:20 am

bm140i wrote:
Wed Sep 20, 2017 11:53 am
Sure did :)

Next day arrival - thanks to Mike over at Motech. 405M alloys and other M Performance bits being fitted Friday at Cotswold BMW, springs and 12mm spacers fitted in Manchester on Sunday. Not long to wait 8)

Before and afters will be shared for sure.

20170920_113745_resized_1.jpg
20170920_113730_resized_1.jpg
Excited :mrgreen:
01604 810000
07842 122467
info@motechperformance.co.uk

ECU mapping to a standard, not a price!

www.motechperformance.co.uk

Post Reply

Return to “Tyres/Wheels”