Lodi

Thanks for your suggestion, an appointment was made to check the alignment. The tires are original tires and I did not put any thing to the tires.

Lodi

Strangely, the rear tires worn out more at edges, which is not consistent with high tire pressures.

Lodi

32 front 32 rear for 3 people and 3 luggages, 41 front 44 rear for 5 people and 5 luggages are shown on the gas filler lid.

Thank you very much for your comments and suggestions.
Have a nice weekend.

AWTX

I'm thinking maybe go at 36 all the way around - for 1-5 people with 0-3 luggage. Such an interesting formula.

You'll get in the car, drive to pickup your kids, and they have back packs. When you get home, your spouse hops in and you go out to a restaurant. Starts at 1 people with 0 luggage, Ends up with 5 people with 3 luggage.

caspertm

I agree strongly with the guys that mentioned tyres. The OEM tyres for these SUVs often are dry weather tyres and yes they do wear down quickly (VERY VERY QUICKLY) due to the soft sticky compound they use, The width of the tyres doesn't help either in wet weather. As mentioned before, it makes hydroplaning a lot easier. For heavy rain I would say you were driving too fast as well. Yes, the electronic systems could have made things worse but I wouldn't say they are faulty. Was probably trying to respond to an abnormal situation either due to leaving the lane or spinning tyres.

Just to give some context from personal experience. I had a double cab truck before that I could drive up to 160km/hr in heavy rain and still be fine and yet with the GLE coupe doing 100km/hr on the same road in similarly heavy rain is quite frightening.

Yes, you may have it checked as a precautionary measure but I would say more importantly change your tyres, lighten your right foot in heavy rain and forget about cruise control in wet weather or other slippery conditions.

Lodi

I will go @ 32 as they listed in the future since l usually don’t take many people in my car. The accidents really scarred me for life.

@AWTX

LILBENZ230

Don't use cruise in the rain.

Also, sometimes you just need to slow down for conditions no matter the speed limit.

Lodi

Thank you very much for your comments and suggestions.

But I can’t believe MB SUVs are unable to handle heavy rain as Honda Pilot or Accord, which I have been drinking for long time and they run very well in heavy rains without any problems @ same speeds.

Lodi

I definitely will not use it again in rain or any bad weather. But the car spun off the road again even @ 60 without cruise, meanwhile a lot of many different cars run much faster ahead of me without any problems. Really scared and confused after these accidents.

@LILBENZ230

grayltd

Driving our new to us CPO 2017 GLS with 26K. miles light rain around 50 mph, no cruise control, had a similar experience. A strong gust of wind came across the car and the car behaved like it was on a sheet of ice ( temperature was in the 50s). Brought car to M-B service as I was concerned there was an issue with cross wind assist. According to the dealer, no issue found after the tech could not find issue when driven in dry conditions. Yes that’s right they tested it in DRY conditions. Dealer also mentioned tires were fine with 5/32 remaining tread. Note I just bought this CPO car from the same dealer. I proactively bought new tires for the car as the dealers tech staff leaves much to be desired. Knowing they sold me a car with 5/32 remaining tread I asked if they would mount my new tires for free as a sign of goodwill. They offered to discount the labor 20% that I declined. I’ve purchased several cars from the same dealer I will no longer do so. BTW the GLS drives and handles great in the rain with the new tires.

Lodi

Thank you very much for sharing your experience.
Just let you guys know that the car was felt much more stable after the lane departure warning system was deactivated.

snowflakeGL

Hi, i know this is an oder thread, but the OEM Continental tires are terrible driving in rain, or snow. They are rated UHP (Ultra high performance). My older GL550 (295/45/21) came with those, and i too had experienced hydroplaning on those tires. Reading this forum it was recommended to get the Continental DWS06 tires, which i did and are awesome all around including driving in light snow. the DWS06, will definitely give you more confidence. They also have neat little DWS etchings on the tire that show wear, D = Dry, W = Wet, and S = Snow.

turbo 6594

thanks for sharing the information on the tires.
I am very disappointed with the Pilot a/s 3+.

sixstring09

To me, it sounds like a bad sensor somewhere that is activating a safety system and therefor over-reacting.

Benjamin Zu

Hi Lodi,

I found your message, my brother had a very big car accident on Aug 30th, the car was destroyed ( thanks god no one died), exactly the same thing happened, his 2018 GLS450, with two new tires from MB service center, totally lost control in a light raining day.

First, I strongly suggest you don't drive your GLS550 and go to MB service center to check it ASAP.
We will contact MB and a law firm to looking for what happen to the car.

Wish you all best!

Ben

Andrew Porter

Happened to me today, scary situation, very moderate rain, new front tires. Back tires were new as of 2021 December…definitely not something I would ever think would happen on this vehicle.. I need answers… completely disappointed and surprised.

wyatt88

Glad you survived the wild ride. I have always wondered how Mercedes' Cross Wind Assist affects traction during rain or snow. Wondering if Cross Wind Assist is responsible for this sudden skidding during rain.

clunker

should not this thread be moved to the X166 forum? all these posts refer to the older model GLS

ACC2

Are any of these X167's. See the successive post is a little worrying

Wolfy90503

So, any resolution on the issue? We need to investigate similar vehicles such as the Range Rover and LX570 to see how they handle in the rain.

clunker

1. It is rather unfair for you, unprompted, to refer to members of this forum as 'idiots' when people are almost universally here to productively share information, and have actually been supportive of your and other's experience.
2. It may be we do not know what we talking about, but maybe we do and may be you do not. But in any case let's just be civil here.
3. I would note that you have posted about a used 5 year old car which is no longer in production (the X166), on a forum that clearly states it is for a different vehicle (the current X167.) It may be more productive to get an assemblage of support from X166 forum to get a response from M-B. That said, your frustration is understandable - it may be you think this forum is away to 'vent' at M-B: it is not, you would need to contact M-B directly.

It is possible the ESP traction control program (and/or the sensors) has some serious issue here. One thought is to maybe, meanwhile, considering switching off the ESP in heavy rain and drive very very carefully - no sharp movements - albeit the ESP is actually mean to be your savior in such situations! Your approach to switch off the lane assist etc was wise.

Wolfy90503

Sounds very serious and I am surprised a Google search reveals no other complaints or recall about GLS/GLE wet weather handling, making me think you are extremely unlucky. Still, I would escalate the matter to Mercedes corporate and see their response (please keep us posted.)

GLSsSuck

Yeah, I’m not a big forum guy, but this was serious enough for me to sign up and let people know I had similar issues as the person who started this thread. I tried explaining and working with my local dealer to no avail. I also contacted MB customer care and walked through my issue. They did absolutely nothing. I wasted so much time on it that it became an obsession. I too am very surprised there aren’t a lot of other information sources pointing out this problem. I started to think maybe I had a lemon. It sounds like as it was with mine some of these vehicles have a serious defect and I think they are very unsafe. People should know about it. Anyways, I’m done. I traded that pile in and went a different route.

Wolfman

Moved to the correct forum

clarkpittman

LILBENZ230 has it right. Conventional wisdom is no cruise control in the rain. The cruise control can aggressively call for power with no regard for road surface conditions and once traction is lost you are just along for the ride.