powersurge
Posts: 1464
Joined: Wed Oct 21, 2015 10:24 am
Delivery Date: 06 Dec 2014
Location: Long Island, NY

Re: Uneven Front Tyre Wear Question

Thu May 30, 2019 7:26 am

I would definitively have a 4 wheel computer alignment at 30,000 miles. It should be done anyway.

However, this excessive wear on the outside does not necessarily sound like a problem. My original tires were TRASHED at 40K miles, with bald outside of tires. I have heard that the Leafs are particularly rough on tires with hard turning.

I have had better luck with the "plus" version of the OEM tires.

LeftieBiker
Moderator
Posts: 12971
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Uneven Front Tyre Wear Question

Thu May 30, 2019 12:12 pm

GerryAZ wrote:
LeftieBiker wrote: I used to buy and resell Ford Mavericks, and one of the things I liked about them was the very easy Toe-in adjustment. Just a bolt for each upper arm with an eccentric cam on it. Back in those days tires often did develop issues just one wheel at a time. Most Mavericks I gave the Quick & Dirty Alignment just needed it on one wheel.
Leftie,
That was caster or camber adjustment (much easier than installing offset shims or bushings on many modern vehicles). Toe-in is changed by adjusting the length of the steering tie rods. As noted previously, too much toe-in causes excessive wear on the outside edges of both tires. On the Leaf, excessive toe-in also makes the car more prone to sway on grooved pavement or bridge decks (depends upon tire characteristics).
Are you sure? The cam-bolt moved the bottoms of the wheels in or out in relation to vertical. I always thought that was toe-in.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

goldbrick
Posts: 571
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Uneven Front Tyre Wear Question

Thu May 30, 2019 2:12 pm

Toe-in is the angle front to back, or the angle of the tires relative to each other - or the center of the road - as viewed from above.

https://en.wikipedia.org/wiki/Toe_(automotive)

TheLostPetrol
Posts: 81
Joined: Thu Jul 13, 2017 8:19 am
Delivery Date: 21 Feb 2018
Leaf Number: 307105
Location: Greater Chicagoland

Re: Uneven Front Tyre Wear Question

Wed Jun 05, 2019 4:29 pm

Yes. Toe-in adjusts the wheel's orientation around a vertical axis. (Steering also changes the wheel's orientation around that same axis [as a first approximation].) Camber adjusts a wheel's orientation around an axis parallel to the long axis of the car. The third axis is the one the wheel spins around.

Caster changes the steering axis from being vertical to pointing in front of the center of the tire's footprint on the ground.
2018-02-21 Used 2015 LEAF SV Mfd 2014-07 In-serv 2015-02-27
Date mi AHr SOH Hx QC L1/L2
2018-02-21 26,938 60.22 97.0 90.7 1 988
2018-07-01 31,601 58.05 93.5 87.0 11 1223
2018-10-01 35,428 55.63 89.6 82.1 16 1440
2019-08-01 45,923 56.20 90.5 83.3 23 1968

LeftieBiker
Moderator
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Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Uneven Front Tyre Wear Question

Wed Jun 05, 2019 5:07 pm

I do understand it now. It was one of those things I either got wrong in shop class, or was told incorrectly, and just never questioned.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

johnlocke
Posts: 392
Joined: Fri Jan 08, 2016 3:47 pm
Delivery Date: 14 Dec 2015
Leaf Number: 300582

Re: Uneven Front Tyre Wear Question

Fri Jun 07, 2019 9:53 pm

Camber is the angle of the tire from vertical of the sidewall. Castor is the angle from vertical of the kingpin perpendicular to the axle . It is designed to place the tire patch slightly behind the pivot point of the tire to increase stability. Toe-in is the angle of the tires parallel to the main axis of the car. Caster is usually fixed by design and can't be changed. Many cars have a fixed camber as well, although some cars have eccentric bolts to adjust camber and you can buy kits for some cars that add a camber adjustment. Camber is primarily there to even the tire wear due to scrubbing and prevent the tire patch from lifting on the inside edge and losing traction.
2016 SV, New battery at 45K mi.
Jamul, CA
San Diego East County

R1200RT
Posts: 17
Joined: Wed Feb 08, 2017 9:12 am
Delivery Date: 18 Feb 2017
Leaf Number: 406176

Re: Uneven Front Tyre Wear Question

Sat Aug 31, 2019 4:38 pm

Just wanted to add my experience with wheel alignment with respect to my 2013 Nissan Leaf and 2001 Subaru Forester.

Pulling in either direction is caused by Camber imbalance and not by toe settings. Excessive outside edge tire wear is caused by excessive toe-in settings of the tires. Excessive inside edge wear is caused by excessive toe out.

It is rare but possible that excessive negative camber will cause inside tire wear, but this wear is not just the the edge like toe wear, it is spread across more of the width of the tire.

With respect to the Nissan Leaf, unless one installs camber bolts on the front struts, camber is not adjustable. Only front toe is adjustable. Since the rear is a solid axle rear toe and camber is fixed. Although I have seen spacers on sale that can be installed to allow for some rear camber and toe adjustments. Until recently my 2013 Nissan Leaf was showing signs of front outside edge wear. I gave it no thought as I thought this was due to cornering. However last week, I took vehicle in for the recent battery recall, and the dealer mentioned they detected the alignment was not correct!!! I declined to have the alignment adjusted due to cost and I have tools at home to handle the alignment.

So today I looked at the Leaf's alignment. The camber almost matched between the L and R wheels, off slightly by 0.6 degrees. However the toe was completely wrong. The front toe was 3mm toe-in instead of 2mm toe-out. After 1/2 turn on each side, I obtained 2.5mm toe-out.

Couple of years ago, I tried to correct for pulling and crooked steering wheel on my 2001 Subaru Forester. I made some mistakes in my measurement and ruined set of tires with too much toe-in. But it was a learning experience with respect to how camber if not balanced between both sides causes pulling and excessive toe-in caused edge wear.
2013 Leaf SL - purchased 3-28-2017.
Juice Box Pro 40
DFW, TX

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