Some conjectures on the GLC suspension
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Member
Joined: May 2017
Posts: 101
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From: Los Angeles, CA
2018 GLC300 P01 selenite grey
Some conjectures on the GLC suspension
We have seen in this forum, the issues pertaining to the shaky steering wheel over road bumps, the reduced handling in corners, and the short lives of run-flat tires on the GLC.
I have come to the conclusion that all these issues might be due to the suspension used in the GLC.
I base my finding on the fact that our BMW X3, has similar weight, same run-flats, similar dimensions, rear wheel drive. But the X3 corners much better, has no steering wheel vibrations, and better tire life.
The only major difference is the suspension.
Also, the X3 recommends tire pressure at 33PSI. While the GLC recommends 35 PSI front and 42 back at full load. I suspect that was Mercedes' way to deal with the unwieldy GLC suspension.
Of course, it could be any other causes but the suspension seems like a primary culprit.
I have come to the conclusion that all these issues might be due to the suspension used in the GLC.
I base my finding on the fact that our BMW X3, has similar weight, same run-flats, similar dimensions, rear wheel drive. But the X3 corners much better, has no steering wheel vibrations, and better tire life.
The only major difference is the suspension.
Also, the X3 recommends tire pressure at 33PSI. While the GLC recommends 35 PSI front and 42 back at full load. I suspect that was Mercedes' way to deal with the unwieldy GLC suspension.
Of course, it could be any other causes but the suspension seems like a primary culprit.
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Joined: Oct 2009
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From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Tire pressure is a more likely suspect.
Experiment with +2 or -2 from the gas flap pressures.
I assume you are using the gas flap pressures. Why the Full Load inflation? You are probably reducing grip if you're not at full load.
Experiment with +2 or -2 from the gas flap pressures.
I assume you are using the gas flap pressures. Why the Full Load inflation? You are probably reducing grip if you're not at full load.
Last edited by mikapen; Dec 30, 2023 at 01:10 PM.
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Joined: Oct 2002
Posts: 201
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From: Washington, D.C.
2016 GLC300 & 1991 500SL
The steering wheel shake over bumps could be related to the software and resolved via an update, mentioned elsewhere on this forum. That fixed my steering wheel shake. My GLC's run flats have nearly 30k miles on them, so my suspension isn't prematurely wearing them. Sure, the handling isn't that great in corners, but it's not a Porsche 911. I usually put it in Sport + if i want better handling.
Last edited by BVC500; Jan 2, 2024 at 10:59 AM.
