Isn't there something about the car causing the toe to change when at speed anyway? So don't you actually avoid being directly at 0 toe?

 

^ never heard of anything like that, toe just wears out the tire faster. i mean on grand turismo five i put some toe in to give me a nice turning radius and cool drift moves.

other then that, my toe stays at 0. shouldn't be any reason for toe honestly unless your a hardcore *** track fanatic. although, it's just my opinion.

 

You mean like the toe pointing out as it reaches speed?

 

I set my buddies coupe (slammed on tein basics) to -1.5
Camber with the toe at 0.05 (rear obviously) and he has 28k on his tires with life left still.

 

So i basically want front and rear to have same toe spec, close to zero?

Where do you work?

 

I personally set them the same anywhere from 0.00-0.05.

You won't notice the difference in handling or tire wear of your specs are within that range.

I worked at Firestone for 3 years and now I do my own alignments at home with toe played and a digital camber gauge.

 

what!!! that's awesome.
You must live in SD.
How much would you charge for an alignment? lol
i sometimes go to SD for autox events.
I wish i know how to do my own alignment

 

how do you adjust toe at home? i was just going to try and measure front side of the wheel and back side of the wheel and make them match with the suspension loaded on jack stands

 

using toe plates. Very similar to your idea of measuring the front and back side of the wheel and setting them even.

 

Overall tire wear isn't the issue here, it's the type of wear that occurs. Inner tire feathering is pretty common on these cars (03-04s especially) and Zs. Once I installed Z springs on the front of my Z, the tires started feathering. I've done extreme toe-in (0.16"), slight toe-in (0.08), and 0 toe. The feathering got slightly better as the toe came close to 0, however, the problem is still there and I've learned to deal with it. The signs of feathering are:

1) Scalloped, bumpy, or strange ridge patterns forming on the inner tread block.

2) A slight roaring noise at speeds under 40mph. The roaring noise gets louder when applying the brakes because the brakes pull the tires inwards.

3) Increased vibration under slow speed braking.


All I've found that helps is rotating the tires every 2K to 3K miles. The feathering occurs on my OEM 17s and aftermarket wider and larger 18s. I just put on a new set of 18" tires to replace my old PZeros that were feathered pretty badly. The new tires are Sumitomo HTRIII and I've felt the inner tread block after driving and the block is warmer than the rest of the tire. That tells me these tires will eventually feather too. It usually becomes noticeable after 6K miles.

There is definitely a flaw in the front suspension design of these cars. My guess is there's extreme caster when running the Z springs and the bushings are allowing for some movement at speed.

 

the cause of feather the inside edge is the caster angle.

 

^ explain.

 

this has been cover on my350z and is the reason spc makes uper control arms with caster adjustment for the 350/g35

the way i understand caster is to think about bikes where its called rake, think about the choppers on OCC with extreme rake, when you turn the wheel it leans over funny, on a car this shreds the inside edge of the tire on the outside of the turn. reduce the caster or rake like a crotch rocket not only do you reduce the angle when turning but also get a slightly more responsive steering feeling.

 

I got my alignment done. -2.4 front with 0 toe. -1.7 rear with 0 toe. They hand aligned the car so there's no way i can confirm that though lol
They didn't center the steering. Not sure if this is happening after alingment but i hear slight roaring at low speed or slowing down.
Can i get an alignment done from you whenever i go to SD for autox? lol
whats' the price! i'll get my hand dirty with ya

 

Gdup35sedan: not answering me
Do you have a pic of camber and toe aligning set up? i prefer to buy this alignment DIY set up then buying a lifetime warranty alignment at a mexican place.