Rough ride... Tire Pressure or HAS?

ttaidapos · 12-18-2023, 09:20 PM

Having a hard time with this one. Appreciate any ideas here on my new M2 G87.

Observation
Stiff ride even on "comfort" settings. Almost feel like tires are super over inflated.

Setup

Port installed HAS, no spec sheet so I presume it was the standard drop
Square 245/40R19 with Michelin PILOT ALPIN PA5
~250 miles
Tried PSI from 29 to 34
Temperature 25F - 40F

abrandonment · 12-18-2023, 10:08 PM

Third option... 'Sports Car'

M2siast · 12-18-2023, 11:16 PM

Shipping blocks still installed.

M_Power Rob · 12-18-2023, 11:45 PM

Quote:

Originally Posted by M2siast

Shipping blocks still installed.

That would be really bad considering the car had port installed HAS.

anthemavm · 12-19-2023, 07:41 AM

Quote:

Originally Posted by ttaidapos

Having a hard time with this one. Appreciate any ideas here on my new M2 G87.

Observation
Stiff ride even on "comfort" settings. Almost feel like tires are super over inflated.

Setup

Port installed HAS, no spec sheet so I presume it was the standard drop
Square 245/40R19 with Michelin PILOT ALPIN PA5
~250 miles
Tried PSI from 29 to 34
Temperature 25F - 40F

What did you drive before,?

c1pher · 12-19-2023, 07:43 AM

I have the factory suspension and find it a little harsher than I’d like at times, particularly on uneven pavement. I am at 36psi but think the comfort pressure is more like 32psi.

anthemavm · 12-19-2023, 01:15 PM

Quote:

Originally Posted by c1pher

I have the factory suspension and find it a little harsher than I’d like at times, particularly on uneven pavement. I am at 36psi but think the comfort pressure is more like 32psi.

My daily driver is a X3mc on MSS Springs, the M2 is like luxury.

ttaidapos · 12-19-2023, 01:26 PM

Quote:

Originally Posted by abrandonment

Third option... 'Sports Car'

Possibly 😁

ttaidapos · 12-19-2023, 01:27 PM

Quote:

Originally Posted by M_Power Rob

That would be really bad considering the car had port installed HAS.

Right? How can I check that? I'm sure it's not the case but you never know.

ttaidapos · 12-19-2023, 01:29 PM

Quote:

Originally Posted by anthemavm

What did you drive before,?

Alfa Romeo Giulia and still drive a Stelvio QV.

ttaidapos · 12-19-2023, 01:31 PM

Quote:

Originally Posted by anthemavm

My daily driver is a X3mc on MSS Springs, the M2 is like luxury.

I'm not expecting a Cadillac by any means but I do feel every little imperfection on the road which doesn't seem right. I've owned many sports cars in my 25yrs driving and this is a first. Literally feels like I'm driving on 65 PSI tires.

tylerdurdem · 12-19-2023, 01:43 PM

How many miles? I noticed the ride loosen up over the first few thousand miles, but it wasn't bad before that.

anthemavm · 12-19-2023, 01:51 PM

Quote:

Originally Posted by ttaidapos

I'm not expecting a Cadillac by any means but I do feel every little imperfection on the road which doesn't seem right. I've owned many sports cars in my 25yrs driving and this is a first. Literally feels like I'm driving on 65 PSI tires.

Any chance you still have bump stops on the suspension?

ttaidapos · 12-19-2023, 02:59 PM

Quote:

Originally Posted by tylerdurdem

How many miles? I noticed the ride loosen up over the first few thousand miles, but it wasn't bad before that.

Only have about 250 on the clock so far.

ttaidapos · 12-19-2023, 03:01 PM

Quote:

Originally Posted by anthemavm

Any chance you still have bump stops on the suspension?

Maybe? How do I check this? As others said, doubt it since I got port installed HAS.

apez · 12-19-2023, 03:52 PM

Quote:

Originally Posted by ttaidapos

Maybe? How do I check this? As others said, doubt it since I got port installed HAS.

I am pretty damn sure they put the shipping blocks back in after has install.

At least when I saw my car in transit mode it was pretty high still.

M2siast · 12-19-2023, 03:59 PM

Quote:

Originally Posted by apez

I am pretty damn sure they put the shipping blocks back in after has install.

At least when I saw my car in transit mode it was pretty high still.

I’m not sure why shipping blocks would be removed before shipping is done… they’re there for shipping as the name implies.
So not sure why OP is dismissive of this. Quick check and done. If they’re there, they have to be removed. Simple

ttaidapos · 12-19-2023, 05:28 PM

Quote:

Originally Posted by M2siast

I’m not sure why shipping blocks would be removed before shipping is done… they’re there for shipping as the name implies.
So not sure why OP is dismissive of this. Quick check and done. If they’re there, they have to be removed. Simple

This makes sense, for some dumb reason I thought the were removed at the port during the install but it makes sense to install them again. I'll check the car in a bit

apez · 12-19-2023, 06:25 PM

Quote:

Originally Posted by ttaidapos

This makes sense, for some dumb reason I thought the were removed at the port during the install but it makes sense to install them again. I'll check the car in a bit

If you have MP HAS it should be pretty obvious as I think the car will ride higher.

ttaidapos · 12-20-2023, 09:03 AM

Quote:

Originally Posted by apez

If you have MP HAS it should be pretty obvious as I think the car will ride higher.

Correct, no bump stops. Just double checked. Anyone have experience with this tire in this temperature?

aerobod · 12-20-2023, 10:57 AM

Quote:

Originally Posted by ttaidapos

Correct, no bump stops. Just double checked. Anyone have experience with this tire in this temperature?

If you are driving in temps below 5C (41F) on the stock summer tyres, the tyres will be rough-riding, noisy and lacking grip. They may also vibrate due to flat spots until they have warmed up. A proper winter tyre will solve that.

ttaidapos · 12-20-2023, 12:22 PM

Quote:

Originally Posted by aerobod

If you are driving in temps below 5C (41F) on the stock summer tyres, the tyres will be rough-riding, noisy and lacking grip. They may also vibrate due to flat spots until they have warmed up. A proper winter tyre will solve that.

I'm experiencing this with winter tires.

12-18-2023, 09:20 PM	#1
ttaidapos Private First Class 130 Rep 172 Posts Drives: Alfa Romeo Stelvio QV, M2 G87 Join Date: Sep 2023 Location: Midwest iTrader: (0)	Rough ride... Tire Pressure or HAS? Having a hard time with this one. Appreciate any ideas here on my new M2 G87. Observation Stiff ride even on "comfort" settings. Almost feel like tires are super over inflated. Setup Port installed HAS, no spec sheet so I presume it was the standard drop Square 245/40R19 with Michelin PILOT ALPIN PA5 ~250 miles Tried PSI from 29 to 34 Temperature 25F - 40F
	Appreciate 0 Tweet Quote

12-18-2023, 10:08 PM	#2
abrandonment Lieutenant 777 Rep 471 Posts Drives: M2 Join Date: Nov 2023 Location: Austin iTrader: (0)	Third option... 'Sports Car'
	Appreciate 4 Mark_1716.50 Bearded-Driver876.50 baj_baj182.50 Resoelg244.00 Quote

12-18-2023, 11:16 PM	#3
M2siast Colonel 5876 Rep 2,987 Posts Drives: A Family Sedan Join Date: May 2023 Location: Canada iTrader: (0) Garage List 2023 BMW M2 [9.67]	Shipping blocks still installed.
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12-19-2023, 07:43 AM	#6
c1pher Primo Generalissimo 4672 Rep 4,023 Posts Drives: All of them Join Date: Jun 2009 Location: DC area iTrader: (0) Garage List 2017 Porsche 911 Ca ... [10.00] 2023 BMW M2 [9.00] 2023 Porsche Macan GTS [10.00] 2022 Ford F-250 Tremor [8.50]	I have the factory suspension and find it a little harsher than I’d like at times, particularly on uneven pavement. I am at 36psi but think the comfort pressure is more like 32psi.
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12-19-2023, 01:43 PM	#12
tylerdurdem Private 88 Rep 92 Posts Drives: 2023 BGM M2 Join Date: May 2023 Location: Portland iTrader: (0)	How many miles? I noticed the ride loosen up over the first few thousand miles, but it wasn't bad before that.
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