Z Pulling Left

BettyZ · 06-08-2019, 04:59 PM

I'm not the smallest human, and I've found it highly annoying that the Z pulls left a tad when I'm on the highway. Tires are fresh and suspension recently aligned. I noticed this pulling decreased when I had 70 lbs of ice in the passenger seat area.

I'm wondering what can be done to fix this, aside from welding a box together, mounting it to the passenger seat bracket, and loading it with lead bricks (we did this at a race shop I worked at in my teens.) Appreciate any thoughts or feedback!

OptionZero · 06-08-2019, 05:37 PM

Find a different alignment shop and do another one
Also inspect suspension components for damage and tires for uneven wear

Trips · 06-08-2019, 06:17 PM

Like member OptionZero has suggested have it looked at by another alignment shop.

It could be the toe is off or the wheel needs to be balanced If that checks out then possiblylook at the brake caliper.

Rusty · 06-08-2019, 09:49 PM

Check your air pressure.

Next, switch your front tires left to right, right to left and see if it still does it. If it still pulls to the left. You then have ruled out radial tire pull. If it quits or pulls to the right. Then you know it's in a tire. Do this first because it doesn't cost any money if you switch the tires yourself.

Next step would be an alignment shop.

Zyonara91 · 06-18-2019, 10:10 PM

I would:
1) Do what Rusty told you to do. . . If nothing then:

2) Go get your tires balanced (for good measure) and an alignment, while at it, tell them to check your tire pressure.

CM370z · 06-19-2019, 10:53 AM

I say this with no offense to anyone but if you are particularly large person, your weight may cause the alignment to be off when driving. To compensate for this, you can get another alignment but have them align the car with you in it. This should fix your car veering to the left when driving IF the problem was indeed the alignment.

bunk · 06-19-2019, 10:55 AM

Quote:

Originally Posted by CM370z

I say this with no offense to anyone but if you are particularly large person, your weight may cause the alignment to be off when driving. To compensate for this, you can get another alignment but have them align the car with you in it. This should fix your car veering to the left when driving IF the problem was indeed the alignment.

Or get another fat person to sit in the passenger seat.

BettyZ · 06-19-2019, 11:30 AM

Quote:

Originally Posted by CM370z

I say this with no offense to anyone but if you are particularly large person, your weight may cause the alignment to be off when driving. To compensate for this, you can get another alignment but have them align the car with you in it. This should fix your car veering to the left when driving IF the problem was indeed the alignment.

See this is what I was getting at. And that's what I thought would be the solution.

Sent from my SM-G955U using Tapatalk

BettyZ · 06-19-2019, 11:31 AM

Quote:

Originally Posted by bunk

Or get another fat person to sit in the passenger seat.

Whatchumean "another?" This is all muscle, friend. I drop the trans and bench press it back into place for my daily workout.

Sent from my SM-G955U using Tapatalk

bunk · 06-19-2019, 12:02 PM

OptionZero · 06-19-2019, 01:27 PM

um . . . isn't something wrong with your suspension components if the weight of a driver is enough to disrupt the alignment?

cv129 · 06-19-2019, 01:51 PM

How much left are we talking about?

Are we talking about nano of a degree over a mile or is it like driving an old work truck they had never been aligned?

BettyZ · 06-19-2019, 02:16 PM

Both good questions. We're talking 14% of the GAWR sitting in the driver seat. And the deviation in question is a very slow but noticable left drift. Could just be Illinois garbage roads are poorly graded. But I've always figured that if the interior was not designed with someone of my stature in mind, the suspension might not be either? Just thoughts. My knowledge of suspension is limited to:

1) it involves springs and gases.

2) if you unbolt the FUCA and pull the coilover out of its mounting holes, the steering knuckle will obey Archimedes/Newton and punch you in the face.

(Not really but you get my drift. Get it?)

Sent from my SM-G955U using Tapatalk

SouthArk370Z · 06-19-2019, 02:31 PM

Because of the crown in roads, many alignment shops adjust so that the car will pull a little to the left. Maybe your shop over did it.

As a temporary fix, you can add a little bit of air to the left tire. I'm assuming you've checked pressure on all four corners already.

BettyZ · 06-19-2019, 02:39 PM

Quote:

Originally Posted by SouthArk370Z

Because of the crown in roads, many alignment shops adjust so that the car will pull a little to the left. Maybe your shop over did it.

As a temporary fix, you can add a little bit of air to the left tire. I'm assuming you've checked pressure on all four corners already.

That makes sense. I have lifetime alignment with douche-stone and I'll be taking it in soon. I'll add some pressure to the left front. And yes I used an electronic meter on all four and they were equivalent.

Sent from my SM-G955U using Tapatalk

06-08-2019, 04:59 PM	#1 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: USA Age: 38 Posts: 5,260 Drives: A Garage Queen Rep Power: 2684371	Z Pulling Left I'm not the smallest human, and I've found it highly annoying that the Z pulls left a tad when I'm on the highway. Tires are fresh and suspension recently aligned. I noticed this pulling decreased when I had 70 lbs of ice in the passenger seat area. I'm wondering what can be done to fix this, aside from welding a box together, mounting it to the passenger seat bracket, and loading it with lead bricks (we did this at a race shop I worked at in my teens.) Appreciate any thoughts or feedback! __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

06-08-2019, 05:37 PM	#2 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,270 Drives: 15 370Z Nismo 6MT Rep Power: 214101	Find a different alignment shop and do another one Also inspect suspension components for damage and tires for uneven wear BettyZ likes this. __________________ OptionZero Build Thread

06-08-2019, 06:17 PM	#3 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	Like member OptionZero has suggested have it looked at by another alignment shop. It could be the toe is off or the wheel needs to be balanced If that checks out then possiblylook at the brake caliper. bunk and BettyZ like this. __________________

06-08-2019, 09:49 PM	#4 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,501 Drives: 2011 Nismo GM 6M Rep Power: 2684439	Check your air pressure. Next, switch your front tires left to right, right to left and see if it still does it. If it still pulls to the left. You then have ruled out radial tire pull. If it quits or pulls to the right. Then you know it's in a tire. Do this first because it doesn't cost any money if you switch the tires yourself. Next step would be an alignment shop. SouthArk370Z, YYZ, bunk and 1 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

06-18-2019, 10:10 PM	#5 (permalink)
Zyonara91 Enthusiast Member Join Date: Jun 2016 Location: GTA Posts: 368 Drives: 2010-Red-6spd-S/T Rep Power: 15757	I would: 1) Do what Rusty told you to do. . . If nothing then: 2) Go get your tires balanced (for good measure) and an alignment, while at it, tell them to check your tire pressure. __________________ 2FT3PDLZ

06-19-2019, 10:53 AM	#6 (permalink)
CM370z Enthusiast Member Join Date: Jun 2015 Location: Riverside Posts: 409 Drives: Nismuse Rep Power: 27	I say this with no offense to anyone but if you are particularly large person, your weight may cause the alignment to be off when driving. To compensate for this, you can get another alignment but have them align the car with you in it. This should fix your car veering to the left when driving IF the problem was indeed the alignment. BettyZ likes this. __________________ Motordyne \| Fast Intentions \| Berk \| Stillen \| Amuse \| Nismo \| Ferrada \| Z1 \| ZSpeed \| Airlift \| SPL \| EcuTek

06-19-2019, 12:02 PM	#10 (permalink)
bunk A True Z Fanatic Join Date: Mar 2018 Location: Southern California Posts: 4,077 Drives: 2010 370z Roadster Rep Power: 2684370	__________________ -Drop in K&N Filter -Invidia Gemini CBE -Z1 Oil Cooler -Swift Springs - EcuTek -Forgestar F14 -SPL Camber Links -Akebono BBK Upgrade -Z1 Premium SS Lines -SPL Diff Bushings -SPL FUCAs - BellRaceworks Diff Brace

06-19-2019, 01:27 PM	#11 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,270 Drives: 15 370Z Nismo 6MT Rep Power: 214101	um . . . isn't something wrong with your suspension components if the weight of a driver is enough to disrupt the alignment? __________________ OptionZero Build Thread

06-19-2019, 01:51 PM	#12 (permalink)
cv129 A True Z Fanatic Join Date: Jul 2011 Location: Dallas, TX Posts: 3,270 Drives: 09 Nismo, 16 Nismo Rep Power: 163996	How much left are we talking about? Are we talking about nano of a degree over a mile or is it like driving an old work truck they had never been aligned? Rusty likes this. __________________ Setrab \| RE-71 \| SPL \| JRZ \| Nismo \| ARK \| Whiteline \| RacingBrake \| CJM Oil Pan \| Ti shield

06-19-2019, 02:16 PM	#13 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: USA Age: 38 Posts: 5,260 Drives: A Garage Queen Rep Power: 2684371	Both good questions. We're talking 14% of the GAWR sitting in the driver seat. And the deviation in question is a very slow but noticable left drift. Could just be Illinois garbage roads are poorly graded. But I've always figured that if the interior was not designed with someone of my stature in mind, the suspension might not be either? Just thoughts. My knowledge of suspension is limited to: 1) it involves springs and gases. 2) if you unbolt the FUCA and pull the coilover out of its mounting holes, the steering knuckle will obey Archimedes/Newton and punch you in the face. (Not really but you get my drift. Get it?) Sent from my SM-G955U using Tapatalk __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

06-19-2019, 02:31 PM	#14 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Because of the crown in roads, many alignment shops adjust so that the car will pull a little to the left. Maybe your shop over did it. As a temporary fix, you can add a little bit of air to the left tire. I'm assuming you've checked pressure on all four corners already. JARblue and BettyZ like this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

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