05-26-2019, 03:40 PM | #23 | |
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Show me engineering data behind Dinan. You won't be able to find anything other than general statements. I want to see kinematic diagrams and extensive testing on a proving ground not driving down the street and saying "yep feels better". Who works for dinan with 15+ years of OE suspension and tire tuning? Show me actual data on the M2C not something they rule of thumbed onto their product. Lowering your car on aftermarket springs(unless they're OE aftermarket) is a huge failboat for performance. It's great for looks though. I wish people were just honest with themselves and said it looks better, that's why I got it, instead they try to justify their overpriced springs with "performance" |
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05-26-2019, 03:49 PM | #24 |
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Lol just went to Dinans LinkedIn to spark some curiosity. Only two dudes have mechanical engineering in their title, the rest of the company is sales and marketing.
Best of luck boys |
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05-26-2019, 03:51 PM | #25 |
Luxury at the redline :)
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05-26-2019, 04:02 PM | #26 |
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Just watched it. Better than 99% of the aftermarket suppliers. I still don't see any objective engineering data or hard warranties that exude confidence.
From LinkedIn, they have less than a dozen engineers vs thousands at BMW. BMW also produces parts and cars at scale, with robust reliability and performance metrics to go off of. If lowering your car had so many upsides, why didn't BMW engineers lower the stock spec ? |
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05-26-2019, 04:08 PM | #27 | |
Luxury at the redline :)
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I was just respond to your comment regarding Dinan's dog and pony operation.. I trust them 10 times over the alternatives.. |
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05-26-2019, 05:03 PM | #28 | |
this is the way
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05-26-2019, 08:52 PM | #29 | |
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I never said nobody knows what they're doing when they lower their car . It's just most people can't prove to me that performance/realizability has increased or stayed the same. I don't believe in "butt dynos", instead I prefer hard facts and real engineering. But to each his own |
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05-27-2019, 02:49 AM | #30 |
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I have to agree with Mr. Spets-Nazos on lowering springs. I've done this in the past. First you convince yourself they are great (and if you are under 25) you like the "stance". Then one day, you either drive a standard car again or put your old springs back on and think. Oh my god, this standard setup is so much better. A great example is that Achilles chap who is ruining his beautiful car one step at a time. I think he realised what he'd done when driving it back to back with a stock setup car in one of his videos.
High quality coilover setups are a different kettle of fish though as the springs and dampers are matched and they have proper travel. If you intend to track the car and are one of those Alvin Atallcosts types, it's probably step 3 after tyres and brakes. It will never be as good as the stock suspension as an all rounder though, but that's the compromise you make when the bug bites. Take note that BMW's own coilover setup won't be used on the new M2CS. In fact the only car it has been fitted to in recent times is the M4GTS, which was probably the most derided F series model and is reportedly a turd to live with once you leave the track. |
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05-28-2019, 05:06 PM | #32 |
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Yeah the only time my tires see >37 PSI is when the car is loaded with my whole family, all of our bags, the cooler and snack bag, and the cat!
Otherwise normal driving 32-33 Canyons I lower so it's closer to 30-31 when hot. Sounds like NJ has some terrible roads and the higher PSI makes the car feel smoother on those roads. |
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05-31-2019, 08:03 AM | #35 |
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My winters needed to be 32psi cold otherwise they would not grip with DSC OFF.
My summers so far I've left it at 32psi cold since thats what my door seal says for my 2017 M3 Comp Pkg. I will try 33.5 to see if it improves over puddles of rain
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05-31-2019, 08:12 AM | #36 |
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I wouldn't lower a car considering how shit the roads are in the PA/DE/NJ tri-state around me. I dread the drive to Philly everyday using I-95 or when I need to get to Voorhees via 295.
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06-26-2019, 05:50 PM | #38 | |
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I run 34.5 cold pressure on all 4 corners with 65 degree mornings. That is a good pressure with just me in an otherwise empty car. It has manual transmission which is about 55 lbs lighter than a DCT. If you carry around more weight you might want to add more pressure. In the winter I run a little less pressure because the tires get hard in colder weather. |
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06-26-2019, 06:39 PM | #39 |
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A better ride and improved handling from higher air pressure? Very plausible. Quick story; last year my race team and I were at our first ‘professional’ outing at Laguna with an entry in the Twins class (motorcycles road racing) and we were going backwards on setup because we were lowering pressure in the front tire. The Dunlop rep clued us in that the front needed higher than the perceived average psi for the tire (and bike) to turn and work. Weird, but yeah, it made the difference (our rider took 3rd).
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