04-19-2016, 09:27 PM | #1 |
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2015 X1 35i on Dinan Springs slammed
I'm new to the forum and have already found out a lot of great info so thanks in advance! Anyway, the car was an executive ride that the dealer acquired (M Sport) and installed a Dinan stage 2, some wheel spacers and the Dinan spring set for a 335. The problem is that the rear sits 1 1/4" lower than front and the rear bump stops are smashed. It has a pretty harsh ride. Dinan has no solution for this vehicle and the dealer mentioned trimming the bump stops as a solution...fine maybe for some kids Evo, but not a professional solution for a vehicle like this. Are there many options that I can present to the dealer to make it right?
Last edited by carsar12; 04-19-2016 at 09:41 PM.. |
04-20-2016, 06:39 AM | #2 |
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H&Rs are the only option for the xdrive cars besides going to coilovers. You'll find them listed for the 28xdrive, but work on the 35.
Bilstein also makes a set of B6s for the car to that work well with the H&Rs. BTW: Trimming bump stops is a completely acceptable and necessary solution. If you take away suspension travel via shorter springs, you need to gain some back via the bump stops. Most aftermarket springs will either come with shorter bump stops and a set of instructions for how much to trim off the factory units. Trimming is common and no big deal. In your case, those rear springs are too low anyway. Trimming the stops will help, but not nearly enough. The car is only an inch or so off the factory stops at stock ride height. I imagine when you drive, they've almost fully compressed as it is. The harsh ride comes from when you fully compress them over bumps.
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'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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04-20-2016, 02:59 PM | #4 |
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Just my opinion, but I'd personally, just ask for the OEM springs installed + cash for your troubles
39xx lb vehicle is not where I'd focus my money / energy on modifying. springs meant for another application without an attempt to match dampers is pretty questionable as well, i'd personally go elsewhere for service... |
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04-20-2016, 05:36 PM | #5 | |
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It actually can be a pretty fun little daily with a tune and the suspension buttoned down. Not ashamed to say there are days when I prefer it to the 135/M3. Neat little sleeper.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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04-20-2016, 08:34 PM | #6 | |
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04-21-2016, 05:24 PM | #7 | |
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"Change the appearance and attitude of your X1 with this Bilstein B12 pro cup kit. This kit features Bilstein sport shocks and struts, coupled with Eibach springs for aggressive handling without the aggressive ride quality." https://www.ecstuning.com/BMW-E84-X1...ion/ES2702500/ |
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04-22-2016, 02:10 AM | #8 | |
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I just think it is a keep it stock and drive it hard kind of car |
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04-22-2016, 02:44 AM | #9 |
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I'll third that X1 In M Sport has such a good firm and grippy ride, I'd not change springs or shocks unless they wear and change for the worse.
For me it's track ready for driving as fast as track will allow (have hit 120mph on COTA) for 20 minutes with no brake fade or engine over heat (s28i). |
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04-22-2016, 06:17 AM | #10 | |
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I would have gone that route I think for the shorter bodies.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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04-22-2016, 09:39 AM | #11 | |
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Even cheaper: http://www.ajusa.com/Bilstein-46-191...pKEaAiTn8P8HAQ |
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04-22-2016, 01:03 PM | #12 | |
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Uggg...why didn't I wait! That's a no-brainer for everyone on here I think.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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04-22-2016, 01:09 PM | #13 | |
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04-22-2016, 01:23 PM | #14 |
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We need to find out if this means you can now buy the B8s separately.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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04-22-2016, 03:20 PM | #15 |
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These appear to be the B6 HD shocks and struts. I zoomed in on the part number using ECS Tuning's listing for this setup.
Last edited by fiehlsport; 04-22-2016 at 03:35 PM.. |
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04-22-2016, 06:32 PM | #16 |
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Great detective work, thanks. Well that answers that.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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