04-30-2017, 09:10 AM | #1 |
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Style 619 wheels - forged or cast ?
619 is the standard wheel on SE cars (except 520d). So far, so dull.
But the BMW UK website already lists this wheel as an accessory for the G30 with the description "Multi-spoke style 619, forged" http://www.bmw.co.uk/en_GB/topics/di...yId=11274.html Is this really forged rather than cast ? Last edited by morellomax; 04-30-2017 at 09:11 AM.. Reason: Found listing for G30 rather than G11 |
04-30-2017, 09:22 AM | #2 |
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Maybe it is - etk bmw lists its weight as just 9.45kg whereas another G30 18" alloy, the 684, is 12.2kg:
https://www.etkbmw.com/bmw/en/parts/...er/36116861224 https://www.etkbmw.com/bmw/en/parts/...ey/36116874440 |
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04-30-2017, 09:32 AM | #3 |
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04-30-2017, 09:59 AM | #4 |
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This is an old post about wheel and tyre weights from the last time I messed around with different combinations:
http://f10.5post.com/forums/showthre...9#post14385639 Seems like 619's plus a decent non-RFT tyre should be <20kg combined. That's pretty impressive. |
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04-30-2017, 11:43 AM | #5 | |
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Quote:
https://www.etkbmw.com/bmw/en/parts/...oy/36110048017
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F10 520d M-Sport Alpine White | HRE P43SC 20x9+20x11 | Michelin PSS 255/35+295/30 | KW V3 Coilover | M5 Front Sway Bar + M550d Rear Sway Bar | 3DDesign Front Lip | BMW M Performance CF Spoiler | BMW M Performance Diffuser | BMW M Performance Black Grills | BMW M Performance Pedals | |
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04-30-2017, 01:48 PM | #7 | |
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Looking at the 17" wheels, they also vary a lot in weight, so I think the difference in weight is down to the design of the wheel, not if they're cast or forged. The 17" listed weights are as follow; 618 is 8.97 kg 631 is 10.5 kg 645 is 12.1 kg.
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04-30-2017, 01:59 PM | #8 |
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It would be odd, wouldn't it ? I've never seen a forged wheel outside M/M Performance ranges, as you say. Still, 9.45kg is very light for an 8Jx18 wheel I think.
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04-30-2017, 10:56 PM | #9 | |
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05-01-2017, 03:11 AM | #10 |
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Thanks lemetier. Found it on Fuchs' website:
http://www.fuchsfelge.de/index.php?id=1105&L=1 Weight listed as 9kg exactly there. Maybe BMW's figure includes a different paint finish, and/or the weight of the RDCI sensor and valve ? |
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05-01-2017, 05:25 AM | #11 | |
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Quote:
Last edited by lemetier; 05-01-2017 at 05:33 AM.. |
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08-08-2017, 02:23 PM | #12 |
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Well, that is very interesting. Why would they go to the great lengths of having a basic 18" forged meanwhile all the wheels that are supposed to be sporty, i.e. M Sport or M Performance are cast and heavy (with very few exceptions)?
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08-08-2017, 06:25 PM | #13 |
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Have just bought a full set of brand new 619's with tyres and latest sensors off a new 7 series off German ebay: 800 euros. Tyres are wrong size for G30 so will sell on for maybe 300 euros, so 500 euros net for a set of 619 rims and sensors. Very dull looking wheels but they are certainly light !
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08-10-2017, 06:48 PM | #14 |
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619's now shod with Uniroyal Rainsport 3 non-RFT 245/45 18 tyres and mounted. Drove for 3 hours this evening (on an emergency passport retrieval mission ) and very pleased with the ride quality, on passive Msport suspension. Still firm-ish but well damped, and less thump from cat's eyes and potholes. Slight loss of immediacy in turn-in, as you'd expect with a squishier sidewall and more of it.
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08-10-2017, 07:17 PM | #16 |
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Total weights:
664M rear and 275/35 19 Eagle F1 runflat (after 3k miles) = 28.4kg 664M front and 245/40 19 Eagle F1 runflat (after 3k miles) = 25.7kg 619 front/rear and 245/45 18 Rainsport 3 non-runflat (nearly new) = 19.5kg |
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