Oversteer in 2010, 370Z, Roadster

roopjt · 09-12-2012, 02:18 PM

We changed out rear tires and picked up an ugly oversteer.

Replaced the Bridgestone, Potenza with Michelin, Primacy MXV4.

Pressure adjustment helped some. (down in front and up in rear)

Need advice before we have to change front tires.

We are drivers, not technical

ww77 · 09-12-2012, 05:42 PM

Need suspension set up info...
Too stiff in front??

2004YZFR1 · 09-12-2012, 07:35 PM

Do you still have the Bridgestone's on the front? If you have two different brands of tire with different tread designs it's not gone to steer right.

AK370Z · 09-13-2012, 02:20 AM

Quote:

Originally Posted by 2004YZFR1

Do you still have the Bridgestone's on the front? If you have two different brands of tire with different tread designs it's not gone to steer right.

I thought you weren't suppose to mix match tire brands?

DarkJak · 09-13-2012, 01:46 PM

The primacy tires aren't nearly as grippy as our stock potenzas, so the rear will lose grip much faster, causing more oversteer. Switch to same tires on all four corners so they lose grip more evenly, making the car more neutral. Also, you could run a stiffer swaybar at the front.

EVOHUNTER · 09-13-2012, 03:20 PM

Quote:

Originally Posted by roopjt

We changed out rear tires and picked up an ugly oversteer.

Replaced the Bridgestone, Potenza with Michelin, Primacy MXV4.

Pressure adjustment helped some. (down in front and up in rear)

Need advice before we have to change front tires.

We are drivers, not technical

I could be wrong, but wouldnt you want to up the pressures in front and lower in rear?
I ran into this problem when changing rim/tire size, running 30 psi all around.
I went 38 front and 32 rear, seem to help alot!

09-12-2012, 02:18 PM	#1 (permalink)
roopjt Base Member Join Date: Sep 2012 Location: Alabama Posts: 1 Drives: 10 370Z Roadster blk Rep Power: 13	Oversteer in 2010, 370Z, Roadster We changed out rear tires and picked up an ugly oversteer. Replaced the Bridgestone, Potenza with Michelin, Primacy MXV4. Pressure adjustment helped some. (down in front and up in rear) Need advice before we have to change front tires. We are drivers, not technical

09-12-2012, 07:35 PM	#3 (permalink)
2004YZFR1 Enthusiast Member Join Date: Apr 2010 Location: Las Vegas Nevada Posts: 308 Drives: 09 370Z yellow,auto Rep Power: 15	Do you still have the Bridgestone's on the front? If you have two different brands of tire with different tread designs it's not gone to steer right. __________________ K & N Filters \| HPS silicone air intakes\| Fast Intentions CBE with 18" resonators \|

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09-12-2012, 05:42 PM	#2 (permalink)
ww77 Base Member Join Date: May 2011 Location: Germany Posts: 45 Drives: On the Autobahn Rep Power: 14	Need suspension set up info... Too stiff in front??

09-13-2012, 01:46 PM	#5 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,397 Drives: 2009 370Z Rep Power: 16804	The primacy tires aren't nearly as grippy as our stock potenzas, so the rear will lose grip much faster, causing more oversteer. Switch to same tires on all four corners so they lose grip more evenly, making the car more neutral. Also, you could run a stiffer swaybar at the front.