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09-29-2020, 09:29 PM | #221 |
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Going in for an alignment tomorrow with ZCP suspension and camber pins pulled. I have 19x10in square set up, 265 right now but 275/285 once these wear out.
Will be tracking the car a few times a year, and DD the rest of the year. Thinking 1.6F, 1.9R with 1/16th toe in on both F/R. Does that sound right? Seeing some people say toe 0 vs toe in. Going for max camber with stock ZCP suspension with pins pulled, just not sure if there is a too much camber for the rear, or what to do on toe? |
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10-07-2020, 08:49 AM | #222 |
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Looking at getting alignment done after new LCA, FCA, and BC coils. I drive the car as a weekend spirit driving and was thinking the following to provide the shop:
Front Camber -2.5 deg Toe 0.08 deg / 1/16" Total Toe 0.20 deg Rear Camber -2.0 deg Toe 0.20 deg Total Toe 0.3 - 0.4 deg Does this look right? Wheels: Titan7 TS5 Front 18x10 +25 275/35 Rear 18x10.5 +25 285/35 |
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10-07-2020, 08:55 AM | #223 | |
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You don't need any help with turn in on the streets which is the reasoning for toe out on the front. You'll just chew up your tires faster.
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08-03-2021, 08:45 AM | #226 |
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GT4 Settings
I thought this might be of interest
4_0000_1_M3GT4-Setup-Zandvoort_Info_FS_0409_KC-1.pdf |
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01-10-2022, 08:53 AM | #227 |
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Drives: BMW M3
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Garage List 2020 BMW 330i G20 [0.00]
2008 BMW E92 M3 [0.00] 1997 BMW M3 [0.00] 1978 BMW 325is [0.00] 1992 BMW 325is M Te ... [0.00] |
Stock Tires & Suspension
Camber - LF -1.2 RF -1.3 Toe - LF 0.09 RF 0.08 Camber - LR -1.6, RR -1.6 Toe - LR 0.07, RR 0.05 Thrust Angle - 0.01 |
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10-11-2022, 03:06 PM | #228 |
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Swift springs, pins pulled on stock mounts. Everything else stock.
Was able to get down to -2 camber all around. Neutral toe up front, about 10-12 minutes toe in each side in the rear for stability.
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10-12-2022, 12:39 AM | #229 |
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Drives: 10' E90 M3 6MT LB
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-4 0 toe f
-2.5 1/8” toe in r
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12-27-2022, 12:43 PM | #232 |
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Mostly autocross.
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01-07-2023, 10:38 AM | #233 |
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Set-up: Bilstein B-16s w/EDC
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01-07-2023, 10:46 PM | #234 | |
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Quote:
Any one know how to convert minutes to degree for the front caster. Thanks
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03-26-2023, 11:54 AM | #235 |
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Any recommendations on this set up? Just installed coilovers and taking it in this week for a solid alignment and maybe corner balancing too.
Car is mostly a weekend canyon car and 6-8 HPDE’s per year. My goal is better track dynamics, plus improved tread life on my track tires without putting too much additional wear on my street tires. I’m thinking -2.5 front and -1.5 rear. 0 toe front and -.15 rear. Not sure on caster. |
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03-29-2023, 12:55 PM | #236 | |
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If you primarily use this car as a canyon car and have that level of track days, I wouldn't personally be concerned with the street wear. Last edited by jmeenach; 03-29-2023 at 01:37 PM.. |
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03-29-2023, 03:16 PM | #237 |
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Wear is more from toe than camber anyway. The only true way to know if the camber is the right amount is to analyze tire temp across. I agree with jmeenach to go up in the rear, at least to -2 if not a bit higher. Front might need more as well, but -2.5 is a fine starting point. A little tow in for the rear (10-12 minutes each side or about a 1/64th to a 1/32nd" each side). Up front is a bit of a matter of taste. Zero is best for tire wear, but can feel a bit wonderous. I like the feel of toe-out (on my e46, didn't bother with e90 daily), it's a bit snappier on turn in. Not much toe in or out, just a touch (less than rear) if you don't want zero.
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03-31-2023, 04:52 PM | #238 | |
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02-26-2024, 12:53 PM | #239 |
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Just did an HPDE at Thunderhill west with the below alignment. Car is on Ohlins R&T with camber plates. Otherwise stock on 280tw summer tires. I would call this spec "mildly aggressive street"?
Front: -2.5 camber 7.5 caster (basically the most stock bolts will allow) 0 toe Rear: -2 camber 0 toe Car handled great, very sharp turn-in, response and very easy to control. Tended to push a little in the corners but would oversteer a little when getting on the gas. (I'm also just an intermediate driver) I do notice on the street the car will track the road more when you let go of the steering wheel. Very easy to control though. Also noticed a slight drop in feel when driving in a straight line, not in a bad way just different. Not sure if that's caused by the caster or not.
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04-04-2024, 01:04 PM | #240 |
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Checking back in with updated specs. I've increased to an average of 1-2 track days per month, so I'm now at a point where I cycle tires out long before I overly wear the inner shoulders. Especially in the front with 0 toe, where to TBone's point, wear is actually less than you would expect from a high camber setup.
FWIW I run KW clubsport 2-way. 275/35r18 200TW tires on 18x10" wheels with 10mm front spacer to clear perch. Word to the wise - most wheels won't clear with a 5mm spacer, though many websites advertise using a 5mm spacer. Go with a shorty spring or buy a 10mm spacer to save yourself some fitment headaches. You'll also need more than 3' camber up front to avoid rubbing on the fender with a 10mm spacer (at least in my experience). New alignment setup: Front -3.25 deg 0 toe Rear -2.7 deg 1/8" toe-in I have a notebook that I keep with me to detail any "unsettling" moments, over/understeer, etc., which will allow me to tweak setup with my shop and develop individual suspension settings for each track I take the car to. Last edited by jmeenach; 04-04-2024 at 01:11 PM.. |
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04-04-2024, 06:27 PM | #241 |
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I keep reading that e9x doesn't need as much neg camber as E46 did. Probably something to do with the front subframe or having a extra pair of control arms now.
jmeenach, how did you determine to go with -3.25? The correct way to take temps across the tire surface and go to the amount of neg camber that creates an even distribution of heat across the tire. I wonder if street/dual duty cars need more than -3?
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04-05-2024, 11:01 AM | #242 |
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good question, probably don't "need" that much if dual dudty. I think it Depends on which application you want it set up to perform better at, and what your definition is of a "happy medium". -3 up front is somewhat aggressive for the street but my friends who track their e90s regularly run close to -4 up front, and still commute in them a few times a week
I'm happy with -2.5 but on track I can tell a little more would be nice.
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