05-09-2015, 08:33 AM | #45 |
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05-09-2015, 02:50 PM | #46 | |
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can you help me out with this? So lets say that the oem rear size is 18x8.5 with ET47. I'm going to get a wheel that's 18x8 ET30...what is the difference here (lets say by MM)? Is the wheel more inside or out?
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05-09-2015, 11:32 PM | #48 |
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The 18x8 ET30 wheel will extend out 11mm beyond the 18x8.5 ET47 wheel. That's 1mm inside of the 8.5" ET35 wheels that I have that are pretty damn flush on an F30.
Look at it this way: the 8" wheel surface will pull in 6mm on each side because it's a half inch narrower. Then, you're pushing it out 17mm as the offset drops from 47 to 30. 17-6=11mm add'l poke. |
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05-10-2015, 12:51 PM | #49 | |
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05-10-2015, 02:13 PM | #50 | |
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My current setup is: 2014 335i Xdrive msport BMS stage 1 (no drop yet) Apex EC-7 19" F ET35 235/35/19 Conti DWS R ET43 275/30/19 Conti DWS I'm tempted to buy another set of EC-7's ET35 for the rear to go square as snj49er has. Will be keeping an eye on posts to see if other members have better luck with tire combos that will help to fix this problem.
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05-10-2015, 05:54 PM | #51 | |
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05-10-2015, 10:02 PM | #52 | |
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235 35 19 80.0340 275 30 19 80.0959 Delta -0.0772% Tire Rev Difference 0 (Conti DWS) 235 35 19 80.0340 265 30 19 79.3538 Delta 0.8536% Tire Rev Difference 6 (Conti DWS) 245 35 19 80.8998 275 30 19 80.0959 Delta 0.9987% Tire Rev Difference 9 (Conti DWS) The combination I have chosen seems to be the best option as to keeping the F/R diameter's under 1% difference. Wouldn't you agree? Yet something is not right.. What else would you think might be the problem?
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05-11-2015, 04:49 AM | #53 | |
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05-11-2015, 08:07 AM | #54 | |
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Your choice of front and rear tire sizes is as close as any OEM staggered fitment available on xDrives. The 245/40-19 and 275/35-19 set available on xDrive F10's has twice your difference in F/R size. One member here was running 235/35-19 and 255/35/19 on xDrive (2.2% difference) and made no mention of a DTC problem. Good luck getting this sorted. |
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05-26-2015, 12:53 PM | #55 | |
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19x9.0" ET 35 19x10" ET 40 still fishing around to find a proper tire sz to wrap these with. dtc issues with staggered wheels on xdrive.....giving me a complete headache. |
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05-27-2015, 03:21 PM | #56 | |
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We know that BMW equips xDrives with these sizes which are certainly narrower than you'd want to use: F: 8x18" ET34, 225/45-18 R: 8.5x18" ET47, 255/40-18 or F: 8x19" ET36, 225/40-19 R: 8.5x19" ET47, 255/35-19 F10 xDrives are available with this setup which would be pretty beefy on an F30. These sizes are within .7%: F: 8.5x19" ET33 245/40-19 R: 9x19" ET44 275/35-19 Since you have 9"/10" wide wheels, you might want to consider: F: 235/40-19 R: 265/35-19 which are within .3%. or F: 245/35-19 R: 275/30-19 which are within .8%. My car in post#29 of this thread is running 245/35-19 square so these would have the same size sidewall. |
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05-28-2015, 09:07 PM | #57 | |
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the last thing i want is to buy tires and have them come out not close to perfect weird though cause i just checked my stock tires right now and theyre 225/45/18 front and rear. i thought bmw oem staggered tires too |
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05-29-2015, 06:24 AM | #58 | |
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Lets see some pics when your new stuff is mounted!! |
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05-30-2015, 08:05 PM | #59 |
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Is it possible to have a semi aggressive concave type wheel on an xDrive car? I've seen several M5's with a more concave wheel but I'm unclear if that look can be done with an xDrive car. Is it the size of wheel, ex. 8", 8.5", etc. or the offset? I've read through the forum but maybe I'm missing the answer...
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05-30-2015, 08:57 PM | #60 | |
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06-21-2015, 06:19 PM | #61 | |
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dropping it on h&r sports too in the coming weeks... apologies for reviving this thread but are any other f30 xdrive members running one of the above? |
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06-21-2015, 06:22 PM | #62 | |
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06-21-2015, 06:27 PM | #63 | |
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did you try switching to 235/35 and 275/30 to bring the rolling diameters even closer? |
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06-21-2015, 06:36 PM | #64 | |
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06-21-2015, 06:50 PM | #65 | |
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wish the guy whos car threw DSC lights would come back with a resolution though. |
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06-21-2015, 10:05 PM | #66 | |
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I haven't seen a resolution posted for the last 3-4 of these problems. But 235/35F and 275/30R are closer in size than the OEM staggered setup so it's difficult for me to imagine tire selection is the cause. I've been hoping that someone will check back in with the secret sauce for the TC complaints. |
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