Tire Pressure and Understeer

saifansari · 08-22-2017, 02:15 PM

So I noticed that my M2 with MPSS has pretty noticeable understeer compared to my '05 SLK350, which is definitely a huge surprise. I compared both of them with warm tires on the same backroads in the same weather, and the M2 just understeered where there would be none from the Benz.

The SLK has wide aftermarket wheels and Conti DWSs all around, but absolutely no modification besides that. I'm wondering if this has anything to do with the tire pressure in the M2, or maybe if I'm just driving it wrong.

I've been keeping the tires at the recommended pressure for speeds above 100 mph, but I'm wondering if using different pressures would make a difference. Thoughts?

PackPride85 · 08-22-2017, 02:51 PM

You're driving it wrong.

DoZZa · 08-22-2017, 03:38 PM

I honestly cant say I have experienced any understeer in this car, but plenty of oversteer!

Robin_NL · 08-23-2017, 04:42 AM

Also at Assen Moto GP track (stock car on PSS) no understeer really.
Turn in is out of this world and a bit M2's USP(also compared to some Lotusses, Caymans)

Dunno. How is tyrepressure(I'm used to BAR, not PSI)?

Cheers
Robin

CosmosMpower · 08-23-2017, 11:53 AM

You must have like 60 psi in your front tires

08-22-2017, 02:15 PM	#1
saifansari New Member 14 Rep 18 Posts Drives: 2017 LBB M2 Join Date: Mar 2017 Location: Manhattan, NY iTrader: (0)	Tire Pressure and Understeer So I noticed that my M2 with MPSS has pretty noticeable understeer compared to my '05 SLK350, which is definitely a huge surprise. I compared both of them with warm tires on the same backroads in the same weather, and the M2 just understeered where there would be none from the Benz. The SLK has wide aftermarket wheels and Conti DWSs all around, but absolutely no modification besides that. I'm wondering if this has anything to do with the tire pressure in the M2, or maybe if I'm just driving it wrong. I've been keeping the tires at the recommended pressure for speeds above 100 mph, but I'm wondering if using different pressures would make a difference. Thoughts?
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08-22-2017, 02:51 PM	#2
PackPride85 Lieutenant Colonel 1120 Rep 1,644 Posts Drives: M2 Join Date: Sep 2014 Location: NC iTrader: (0)	You're driving it wrong.
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08-22-2017, 03:38 PM	#3
DoZZa Private First Class 82 Rep 156 Posts Drives: MY17 \| M2 \| DCT Join Date: Jun 2017 Location: UK iTrader: (0)	I honestly cant say I have experienced any understeer in this car, but plenty of oversteer! __________________ F87 M2 \| DCT '17 E46 M3 \|SMG '06 E46 M3 \| SMG '03 E30 320iS \| '90 E28 M535i \| '84
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08-23-2017, 04:42 AM	#4
Robin_NL S0THPAW 8715 Rep 7,846 Posts Drives: HS M2 Competition Join Date: Apr 2005 Location: The Netherlands iTrader: (0)	Also at Assen Moto GP track (stock car on PSS) no understeer really. Turn in is out of this world and a bit M2's USP(also compared to some Lotusses, Caymans) Dunno. How is tyrepressure(I'm used to BAR, not PSI)? Cheers Robin
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08-23-2017, 11:53 AM	#5
CosmosMpower Brigadier General 2051 Rep 3,714 Posts Drives: F87c, GT3, MK7 GTI Join Date: Apr 2011 Location: Frisco, TX iTrader: (1)	You must have like 60 psi in your front tires
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