Widened Carbon Fenders & CSL Bumper

[umichchris]

still awaiting those fitment pics, should be gooooood

[Epoustouflant]

Any updates on fitment of fenders?

I picked up 10x new top fender bolts yesterday. Car is out of mech work next week for aluminum carrier / csl bumper/ fender fitment.

[pawa_k2001]

Any updates on fitment of fenders?

[umichchris]

Epoustouflant still interested as both my passenger fender AND my front bumper (vert) are toast and in need of replacement. i'm patient so the timing is ok but curious about ballpark pricing...ill shoot you a PM

[Epoustouflant]

https://www.bkauto.com/R_9232_Washer...t_p/r-9232.htm

That's what I did in the wagon, because the M3 tank also didn't play nicely with the M sport bumper.

Interesting - I'm thinking about this.

I found the CSL SKUs:

CSL Bumper Wiper Fluid Reservoir w/o Washers	61672695531
CSL Bumper Wiper Fluid Reservoir w Washers	61677892701

How does 337 US sound?

Ridiculous.

[Obioban]

As a follow up on this, and getting sort of back on topic

• The last parts to amount the CSL bumper are arriving from Germany this week.
• I haven't researched a wiper fluid reservoir solution just yet. The original reservoir with standard bumper will not fit. Any idea is welcomed! I haven't been able to find the OEM CSL SKU.
• I have had confirmation of shipment on the mechanical parts that were missing (some hoses) or wrong (injectors!) to finalize mechanical work on the car. I was dependent on this to do final fitment.
• I threaded the heads of 5 out of 6x top fender bolts - nice.

Once I have the bumper and fenders fitted up to expectations, I will launch the initial pre-orders for roughly 10x sets of fenders and 10x bumpers. I will validate the numbers and production schedules with Alsatek as we get closer to this.

I want to keep it tight within a solid 12 weeks window for delivery of all initial pre-orders. The bumpers and fenders would ship as they are ready.

All in all, a bit delayed over the initial June expectations but all will realistically come together soon.

https://www.bkauto.com/R_9232_Washer_Tank_Relocation_Bracket_p/r-9232.htm

That's what I did in the wagon, because the M3 tank also didn't play nicely with the M sport bumper.

[Epoustouflant]

As a follow up on this, and getting sort of back on topic

• The last parts to amount the CSL bumper are arriving from Germany this week.
• I haven't researched a wiper fluid reservoir solution just yet. The original reservoir with standard bumper will not fit. Any idea is welcomed! I haven't been able to find the OEM CSL SKU.
• I have had confirmation of shipment on the mechanical parts that were missing (some hoses) or wrong (injectors!) to finalize mechanical work on the car. I was dependent on this to do final fitment.
• I threaded the heads of 5 out of 6x top fender bolts - nice.

[Obioban]

There’s just not really a reason to go wider than 10”. A 10” is optimally sized for a 275, so going wider just adds struggle for no benefit (and is functionally detrimental if you end up getting, say, 265s).

285s also fit fine on a 10” wheel, but IMO are generally a downgrade as you have to align the car for fitment instead even heat on the tire face (so less functional contact patch, despite the tire being wider).

[Gearhead55]

probably if you believe in yourself enough

[jet_dogg]

By that logic 11s will fit.

[Gearhead55]

I don't believe it's even worth considering as he's in the comically fringe group of people running a 10.5" rim (with a 275 tire) which the car simply isn't capable of accommodating.

the car is perfectly capable of accommodating 10.5s if you just believe in yourself.

[jet_dogg]

I don't believe it's even worth considering as he's in the comically fringe group of people running a 10.5" rim (with a 275 tire) which the car simply isn't capable of accommodating.

[Obioban]

Yeah, end link bracket, ask Moton why it's like that. These are also full aluminium shock bodies so they're a bit thicker. I'll be moving to MCS soon which do seem to have a bit more inner clearance.

As far as camber, 3.6* I'm at now is close to the minimum of the range that tire temp data suggests to be at. Depending on the tire, especially on something sloppy like an NT01, up to 4* seems optimal especially for tracks like Buttonwillow with almost no straightaways and minimal braking. 3.5-4* is where most of us end up at for our local tracks, so definitely no sacrifices made here other than maybe scrub radius (not really an issue at higher speeds where less steering lock is used) and some extra wheel bearing load, due to wheel offset.

Anyway, this is missing the point. Regardless of whatever wheel/tire size and offset you're running, anyone who *needs* more front fender clearance and is doing anything other than driving straight ahead will also need the entire fender and bumper widened as well to match, end of story.

I don't mean to bash this idea, I'm still considering a set of these fenders regardless of what happens. I just think there's a great opportunity here to make something both novel and functional to the E46 community, and not "just another" CSL bumper, but a more or less complete front bodywork setup that allows us square setup guys to have even front and rear fender fitment and to properly fit wide (275++) front tires. While we're at it, I wonder how a GTS/CS style functional vented hood would look on an E46..

I agree with what your saying WRT fender/bumper— not debating that upside.

So, unrelated to that, what ride height are you running? Sounds like you may be outside of the good camber curve, if you need that much static camber…

[BBRTuning]

I don't know what that lower black thing is (weird end link mount? Why?), but it's cutting into your clearances for sure.


And being ET35 instead of ET25 means I can set camber based on the pyrometer rather than making it fit.

Yeah, end link bracket, ask Moton why it's like that. These are also full aluminium shock bodies so they're a bit thicker. I'll be moving to MCS soon which do seem to have a bit more inner clearance.

As far as camber, 3.6* I'm at now is close to the minimum of the range that tire temp data suggests to be at. Depending on the tire, especially on something sloppy like an NT01, up to 4* seems optimal especially for tracks like Buttonwillow with almost no straightaways and minimal braking. 3.5-4* is where most of us end up at for our local tracks, so definitely no sacrifices made here other than maybe scrub radius (not really an issue at higher speeds where less steering lock is used) and some extra wheel bearing load, due to wheel offset.

Anyway, this is missing the point. Regardless of whatever wheel/tire size and offset you're running, anyone who *needs* more front fender clearance and is doing anything other than driving straight ahead will also need the entire fender and bumper widened as well to match, end of story.

I don't mean to bash this idea, I'm still considering a set of these fenders regardless of what happens. I just think there's a great opportunity here to make something both novel and functional to the E46 community, and not "just another" CSL bumper, but a more or less complete front bodywork setup that allows us square setup guys to have even front and rear fender fitment and to properly fit wide (275++) front tires. While we're at it, I wonder how a GTS/CS style functional vented hood would look on an E46..

[Obioban]

it is.. just. The rim of the wheel is the closest. Again shows in 2nd pic below with another different 18x10.5 +25. There ain’t much room left, especially if trying to run say a 295 square. You may buy a few mm with a different damper body design.

Either way, I’m just not sure how much this buys you without the bumper to match. Also, if you’re running a wide enough front tire to need these fenders, then the leading edge of the tire will stick out far into the airflow. A wider bumper would also be of a large aero benefit (see: M3 GTR). These fenders look to be of motorsport or at least clubsport grade and with some (relatively) minor tweaks could be properly functional, IMO.

I don't know what that lower black thing is (weird end link mount? Why?), but it's cutting into your clearances for sure.

275 Hoosiers (which run oversize) on an et35 on my car:



And being ET35 instead of ET25 means I can set camber based on the pyrometer rather than making it fit.