5 bolt up front

[cwatt]

I haven't done enough measurements on the E30 to know for sure... just speaking from experience on other platforms. There's a (or maybe a few) smart way to do it, but lots of ways that aren't as smart.

As Nando likes to point out, BBK's work better than stock brakes in a wide variety of ways, so maybe getting the 5 lug to work well is really just a question of getting the right hat offset for your 2 piece rotor.

http://www.turnermotorsport.com/t-wh...e.aspx#Samples

Say an E36 has 17x7.5-41 wheels
Elsewhere on this forum (like the iX wheels thread) it's been stated that a 17x8-20 can fit the E30 iX.
That means that the hub flanges can come out 20mm PER SIDE and fit a 17x8-40, which is close to the E36 fitment.

Awesome link. Not the first ET converter I've seen, but the page in general is very imformative and forced me to hammer down which wheels I intend to run. I can't believe I'm saying this, but the E87 +1cm will actually work to my benefit. I'd like to run 8" wide BMW Style 269s which are available in ET47, so the hub will serve to offset both the additional +8mm ET as well as the reduced backspacing for the strut.

I guess we enter Phase 2 - rotor and caliper selection. Any suggestions?

[The Dark Side of Will]

I haven't done enough measurements on the E30 to know for sure... just speaking from experience on other platforms. There's a (or maybe a few) smart way to do it, but lots of ways that aren't as smart.

As Nando likes to point out, BBK's work better than stock brakes in a wide variety of ways, so maybe getting the 5 lug to work well is really just a question of getting the right hat offset for your 2 piece rotor.

http://www.turnermotorsport.com/t-wh...e.aspx#Samples

Say an E36 has 17x7.5-41 wheels
Elsewhere on this forum (like the iX wheels thread) it's been stated that a 17x8-20 can fit the E30 iX.
That means that the hub flanges can come out 20mm PER SIDE and fit a 17x8-40, which is close to the E36 fitment.

[cwatt]

The devil's in the details of the hub and rotor selection. If those are picked out correctly, then E36/E46 wheel fitments will be available while keeping the caliper adapter brackets very simple.

It sounds like you know something I don't. What combination are you thinking?

[The Dark Side of Will]

Let's consider for a moment that there is no 'bolt on' parts swap option. If we move on, I happen to know a machinist who is nothing short of a gooru and produces some amazing products at an honest man's prices. Therefore, is there a hub/rotor set-up which "comes close" to what we need but would require some milling, drilling, lathing, etc.

If someone can provide the details, I can have this guy whip up a prototype and maybe we can solve this thing once and for all.

If it helps, I'm looking to run e36 or similar wheels.


- Colin

The devil's in the details of the hub and rotor selection. If those are picked out correctly, then E36/E46 wheel fitments will be available while keeping the caliper adapter brackets very simple.

[Nisse Järnet]

Do you have any photos/details re: your bolt-on solution?

I can take some pics later but in short its E87 hubs, slightly modified Jaguar rotors (available in 305 or 325mm), M3 E36 (or 540 E34, E32 etc) with slightly modified E32 carriers (not necessary for the 325mm option) with a custom adapter bracket.

[cwatt]

Ive got parts ready for a bolt on solution :)

Do you have any photos/details re: your bolt-on solution?

[Nisse Järnet]

Didn't you just say that your set-up is 1cm wider? That'll call for some heavily offset rims. Correct me if I'm wrong, but keeping the original spacing might offer more wheel options and avoid having our e30s look like Japanese drift cars with 'poke'. *shutter* lol

Yes its 1cm wider, but I don't think it's a big deal. I have 7x17" rims with ET38 and 215/45 tires and it fits fine.
Depending on the setup you could probably fit ET30 wheels.

[cwatt]

Ive got parts ready for a bolt on solution :)

Didn't you just say that your set-up is 1cm wider? That'll call for some heavily offset rims. Correct me if I'm wrong, but keeping the original spacing might offer more wheel options and avoid having our e30s look like Japanese drift cars with 'poke'. *shutter* lol

[Nisse Järnet]

Ive got parts ready for a bolt on solution :)

[cwatt]

You can't just swap hubs... you need to consider the hub, rotor, caliper and wheel together as an assembly.

Let's consider for a moment that there is no 'bolt on' parts swap option. If we move on, I happen to know a machinist who is nothing short of a gooru and produces some amazing products at an honest man's prices. Therefore, is there a hub/rotor set-up which "comes close" to what we need but would require some milling, drilling, lathing, etc.

If someone can provide the details, I can have this guy whip up a prototype and maybe we can solve this thing once and for all.

If it helps, I'm looking to run e36 or similar wheels.


- Colin

[The Dark Side of Will]

unless he means the hub is shallow.. not sure.

That's how I read it... the hub is too shallow to use the corresponding rotor with the iX knuckles. Solution... hub-centric spacer to move the rotor out until it lines up where it needs to be.

I'm coming around the Nando's way regarding BBK's, though; Lighter, cheaper consumables, better performance. The caveat being that you need to take spares with you on a road trip (e.g. One Lap of America) because you won't be able to source them locally.

I still want 5 lug, though... more from a symmetry perspective than anything else, though.

[Nisse Järnet]

If you fit a really "lowhight" hub/rotor there might be a problem with caliper to rim clearence, so think about that before doing all the work :)

Can you tell us a little more about your set-up. I assue the custom coilovers are optional and the stock strut would work. How does the E87 hub fit? Do modifications need to be made?

E87 hubs fit right in! You just have to pick a rotor and caliper setup to fit your needs. Im using modded Jaguar rotors with M3 E36 calipers on custom adapters, fits great!
Keep in mind that the E87 hub makes the car ~1cm wider on each side.

[nando]

low offset means it pushes the wheels further out. a spacer would make it worse.

unless he means the hub is shallow.. not sure.

[The Dark Side of Will]

yup. the offset of e36 rear hub is too low. you will need a rotor with a very very short hat to make them work.

Could a hub-centric wheel spacer be used between the hub and rotor to make up for the difference in offset?

[cwatt]

Custom coilovers and yes, e87 hub. still running stock calipers..

Can you tell us a little more about your set-up. I assue the custom coilovers are optional and the stock strut would work. How does the E87 hub fit? Do modifications need to be made?