10-21-2020, 11:37 AM | #243 | |
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I was measuring offset/tire size/clearance from the 19x10.5 ET45 305/30 RE-71R rear that I used to run to estimate if it would fit. The NT01 setup is about 1/4” taller and 1/4” more outboard, and it seemed that amount of room was available. It’ll be tight but should work. Last edited by ZM2; 10-21-2020 at 11:42 AM.. |
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10-21-2020, 07:28 PM | #244 | |
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Apex’s description mentioning rolling/pulling fenders has scared me away so far, but if the 305/30r19 RE71 fit, there’s hope yet. |
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10-23-2020, 05:58 PM | #245 |
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Hey I know this isn't a for sale thread, but I've been a contributor to it so I feel it's OK. I sold my M2, and am sitting on a pair of stock painted black rear 19" 437Ms wrapped in 6/32nds worth of year-old 305/30 RE-71rs. I'll practically give them away for 500 bucks in the DC area. This is indeed max rubber for the rears, and they'll fit on a bone stock car. They even have TPMS. Let me know guys. Would love to see them rolling for someone. Thanks.
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10-26-2020, 03:45 PM | #246 |
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From APEX
Good afternoon, Thank you for reaching out in regards to your M2C. While it is possible to fit a 18x11" ET44 on the back of a M2C with 305/35-18 tires, you will need to do quite a bit of work to get everything to fit without rubbing. Typically, that setup will require additional rear negative camber and a rear fender roll/pull. I would not suggest pursuing a fitment like this unless you plan on driving this car strictly on the track, due to the aggressive camber and modification requirements necessary to make it work. If you would like to check out some of our other M2 offerings, our chassis specific fitment guide can be found here: https://support.apexraceparts.com/hc...-Fitment-Guide If you have any additional questions, please do not hesitate to reach out. Best, Geirsen Kalhagen - BMW Product Expert APEX Race Parts Direct: (925) 315-5131 | Main: (925) 245-0773 Web | Instagram | Facebook | Fitment Guides | Help Center APEX Signature Oct 25, 2020, 10:27 AM PDT I have a set of your square 18x10" SM-10's. I'm looking to run some Nitto NT-01's on my M2C. 275/35 on the fronts and 305/35's rear. I have a TC Kline D/A C/O setup on the car. Right now I have Yoko A052's on the 10" rims. 265/35 & 295/35. Under full compression there is a little contact in the rear. I plan on rolling my rear fenders for a little more clearance and adding additional Neg camber as well for added clearance. Can I squeeze the 305 /35's under there on your SM-10 11" rims?
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10-26-2020, 03:57 PM | #247 | |
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I've always wanted that rear 11" fitment to work, but I assumed it was going to be just too tight, especially for a street driven track car.
While the math says there's only a 2.4mm difference b/n this and the 18x10.5 ET40 setup, I still think it'll work without fender rolling. We'll see! Quote:
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10-26-2020, 05:37 PM | #248 | |
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Another thought- what about a 19x10.5 et45 wheel with the 305/30r19? That extra 5mm of space might make the room needed for the 305. I keep thinking 18" front and 19" rear wheels might open up the most tire options for our cars. Last edited by bentom2; 10-26-2020 at 06:35 PM.. Reason: Adding another thought. |
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10-26-2020, 09:59 PM | #249 |
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Its making contact with the inside edge of the fender.
As for running a 19" rear rim, that is a interesting idea. It makes sense and the 305/30/19 is a better fit as well. it has the same diameter as the 295/35 Yoko's. Apex makes a 19x11 Et 44....this is probably the way I'm going in the Spg after the A052's are toast.
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10-26-2020, 10:23 PM | #250 | |
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The 18x10.5 ET40 setup only gives an extra 0.7mm clearance, and that’s going to get more than eaten up by running a 305 NT01 vs 295 A052, so maybe that idea won’t work. How much are you lowered? I ran several 295 & 305/30’s on a 19x10.5 ET45 rear without any issues. Lowered 17mm in the rear. There are two fender tabs that I had to trim back, but I’m guessing you already did that. |
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10-27-2020, 08:38 AM | #251 |
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So my question for the group is, what's the benefit of running the 305 extra rear grip if the limitation is a 275 up front? Is anyone here running a 285/295 up front yet? Or attempted to test fit?
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10-27-2020, 09:12 AM | #252 | |
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I like the extra 11mm with the ET 44 11" rims. Your trial and error work is enough for me to move fwd next spg on getting the 305's to work.
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10-27-2020, 09:30 AM | #253 | |
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A 285 upfront would be ideal, but that limits us to 285/30/18 options upfront and whatever 305/35/18 or 305/30/19 that matches for the back. I don’t see me trying the 295 upfront bc I’m not going to do any fender work on my car. |
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10-27-2020, 09:31 AM | #254 | |
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Trimming the tabs alone will give you ~4mm extra clearance which may be enough for the 305/30/18 18x10.5" ET40 to work that bentom2 and I have been talking about. Last edited by ZM2; 10-27-2020 at 09:49 AM.. |
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10-27-2020, 01:25 PM | #255 | |
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I did the math: Front setup is the 18x10 ET33 with 12MM spacers and 265/35 A052's. Tire Diameter=25.4" /Sec Width=10.6 Going to 275/35 NT-01 = 25.55 & SW 10.91" so almost identical diameter and .31" overall ....0.155" more inside and outside. Rear setup now 18x10" E33 with 295/35's Tire Diameter=26.2 with SW=11.8 Going to 19x11" ET44 with NT-01 305/30/19's Diameter=26.26 (same) and SW=12.32 (0.48" more) or 0.24" inside and outside. With the 44 vs 33ET's 33mm=1.30" 44mm=1.73" , So 0.43" more inboard. So 0.07" further out with the rims and the tires would be 1/4" more. I've got the camber shim kit and can take the tabs out and roll them also. I don't want to add anymore Neg camber than needed in the rear. I'm at 2.0 right now... Sounds really tight...
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10-29-2020, 09:04 AM | #256 |
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I'm contemplating going with Apex SM10 19x9.5 ET22 up front and 19x11 ET44 rears with 275/30/19/ 305/30/19 as oppose to the EC7 M2C specific wheels. Primary reasons I'm considering this set up are 1) I don't want to worry about whether i'll need a spacer to clear coilvers and 2) I think 305/30/19 tires would fit better on 11" wide wheels. I'm really curious how things go with your set up @SeatTimeRules to see if what i'm thinking about will actually work.
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10-29-2020, 09:37 AM | #257 | |
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10-29-2020, 09:51 AM | #258 | |
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Either is going to be such a tight fit for a 305/35/18 on a lowered car running -2.0-2.1 rear camber that I didn't want to risk the 18x11. A 305 is a 305, but the 10.5" rim will pull in the sidewall a little, giving a couple more mm clearance and I think that couple mm will be necessary to not have to do fender work other than trimming the tabs. Essentially I'm estimating that the 18x10.5" ET40 will provide 3-4mm more fender clearance than the 18x11" ET44 with a 305/35/18, which is a lot considering how tight we're talking about. If this had been a normal track year, I already would have tried the 18x10.5" and 305/35/18 so we'd all have an answer. All this said, I hope the 18x11 ET44 works, as that would be a great fitment. I'll follow up with a link to some pics for visuals on my previous setup that I've been measuring from. |
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10-29-2020, 10:13 AM | #259 |
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Here are pics of my previous 19x9.5 ET33 & 19x10.5 ET45 VMR’s with 265/295/30 Trofeo’s. Lowered 12mm front, 17mm rear. -3.0 & -2.0 camber front/rear: https://f87.bimmerpost.com/forums/sh...&postcount=379
As you can see, plenty of room on the outside and there was plenty of clearance on the inside bc I’m running Dinan HAS. A 305/35/18 is 5mm taller and wider towards the fender. Add in that I’m going to ET40 from ET45, and I’m now 10mm further outboard and 5mm taller than what you see in the pic. I now run -2.1 camber in the rear (which gives ~1mm more clearance vs -2.0), but I didn’t want to chance my luck adding another 3-4mm outboard with the 18x11. My gut tells me you’ll be fine after trimming tabs and a little fender roll, but I didn’t want to do the fender roll so I played it safer. All this said, when we're playing the mm game, alignment accuracy and movement (if you don't have lockout bolts/nuts) and differences in tire construction even in the same size will all have fitment & interference impacts that will overshadow the minimal clearances we're talking about. Something about metal rubbing into rubber at high speed also made me want to play it safer with the 18x10.5". Last edited by ZM2; 10-29-2020 at 11:16 AM.. |
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10-29-2020, 10:36 AM | #260 | |
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That being said I will have some good feedback on what 305 square & up feels like on the F87 platform here in a few months
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10-30-2020, 10:09 AM | #261 |
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10-30-2020, 10:09 AM | #262 | |
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Unfortunately it's not apex but you get the idea. I don't think spring with smaller diameter would have any problem with et23 Here's a pic of using 275/35 in the front with spacer. 265 would be totally fine |
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AlpinewhiteM2C126.50 Rundskop148.00 |
10-30-2020, 08:52 PM | #263 | |
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18x10 et 25 - 265/35 18x11 et 37 - 295/30 Currently run 18x10.5 - 265/35 18x11 - 295/30 Both no issues. |
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11-05-2020, 04:30 PM | #264 |
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Do you believe 18*10.5+37 in the rear with 295/30 will fit?
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