12-07-2021, 07:46 PM | #1 |
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Offset talk - g80 m3
Hi all,
Im about to order a set of 20x10 and 20x11 BC Forged wheels and trying to figure out the best offsets. I want to run a 285/30/20 front and 295/30/20 PS4S on the back and will be lowered on KW HAS (not super low). Can anyone shed some light on the "perfect" offset? Vehicles is G80 M3 incase it matters compared to M4. |
12-07-2021, 07:58 PM | #2 |
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I ran the following spec dropped on MSS with no rub. The rear was not slammed though...
You can search for one of my threads to see fitment. Signature and BC Forged are pretty much the same. Signature SV107 Brushed black triple tint finish. 20x10 et14 20x11 et16 Michelin PS4S 275/30/20 295/30/20 |
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12-07-2021, 07:59 PM | #3 |
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The guys at BC will guide you. I've ordered 5 sets for various cars. Tell them your goal.
Just ordered another set from them for my G82.
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12-14-2021, 11:10 AM | #4 | |
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Quote:
19x9.5 +20 275/35/19 to 20x10 +11 285/30/20 Diameter difference: 4mm (679) (0.6%) 20x10.5 +20 285/30/20 to 21x11 +11 295/25/21 Diameter difference: 2mm (681) (0.1%) Last edited by bmbob; 02-20-2022 at 02:13 PM.. |
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12-14-2021, 05:05 PM | #5 |
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For anyone following....
I've ordered BC Forged RZ21 - Dark Brushed Black 20x10 +12 Front 20x11 +14 Rear BC Forged recommended these specs and said they've done numerous sets for G80 M3 now in these sizes. Wheels are 30 days away. Will update thread with photos when they're fitted. |
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12-14-2021, 05:20 PM | #6 |
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For my M4 I went
20x9.5 +6 front 20x11 +12 rear Carbon ceramics.
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12-16-2021, 11:35 AM | #7 |
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Does HRE make any of thier Flow Form wheels in G8x fitment? I know they make 20x10, 20x11 for the F8X but the offsets seem high.
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12-16-2021, 03:40 PM | #8 | |
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I decided to change to +14 all round. Rather be safe for the sake of a couple of mm here or there (the fitment guys would shake their heads at this lol) Will update with photos so you can see the +14 all round fitment when they arrive. |
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12-17-2021, 01:23 PM | #9 | |
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Quote:
Seems nice and flush. |
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12-20-2021, 08:46 PM | #10 |
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12-26-2021, 07:12 AM | #11 |
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Ordered the following (bcforged). Recommended fitment from both bcforged and another bmw
Specialist . (I believe there is still room To get more aggressive too on those offsets so mine are on the mid-conservative side) F:20x10 Et16 R:20x11 Et14
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12-28-2021, 09:52 PM | #12 | |
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Quote:
+6 and +12
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02-08-2022, 06:26 PM | #13 | ||
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02-08-2022, 07:26 PM | #14 |
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02-08-2022, 07:37 PM | #15 |
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Great thx for letting me know!
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02-13-2022, 09:17 AM | #16 |
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Dumb question on offset for G80/82:
From what I've read on offset, as I only am just looking into what it all means so I can order a summer-set of wheels, if you want to have a huge concave or big lip, you want negative offset. That said, I know stock wheels on our M3/4's are positive offset, but I'm just trying to understand how best to get as large a concave or lip as I can get without a wide-body kit. FYI I'm likely ordering from BCForged as well, as I want to spend 4-6k, not 10-15k
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02-18-2022, 09:52 AM | #17 | |
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Best advice on this is to work with your chosen wheel manufacturer to determine the most concave look (or biggest lip) designs they make in your specs, and go from there. The actual design of various wheels (spoke shape, lug area shape, design of where/how the spokes actually attach to the barrel) will all make some wheels look more (or less) concave, in the same specs. Concave typically refers to a 1-piece wheel, whereas the “lip” that you may be after is typically only possible on a 3- or 2-piece wheel. |
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02-19-2022, 08:56 AM | #18 | ||
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That said, I change my mind like a 3 year old, so who knows, but this was really helpful so thank you.
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02-19-2022, 06:50 PM | #19 | |
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With the G8x M3/M4 wheels having OEM et20 offsets, and seeing as low as et6 and et12 with BC Forged wheels in +10" wide wheels, deepest concave (front and rear) would not be an issue. The issue is always clearing the front calipers with those low offsets in the front.
BC Forged will tell you the most concave that they can make while clearing the front calipers at the et that you want. Quote:
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04-04-2022, 09:41 PM | #21 |
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I'm thinking of ordering BC Forged wheels and will not lower my car. Currently have 15/13 spacers and like the poke at the bottom and want the same. I think I could of gone 18mm on front and still be ok. Also I like the aggressive concave for wheels so I'm sure they will advise me on fitment.
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04-05-2022, 10:38 AM | #22 |
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I was looking at some BCs. Nice wheels. Autocouture just got back to me on a set of HRE. Pulling the trigger on them. You only live once right lol. Got a quote on a set of AL13. Suprisingly my wife said "well its your money and you work hard for it. I cant believe im going to say this but get them if you want them" lol So ordering them up before she changes her mind lol
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