Explain My Tyre Wear Pattern To Me

[AlexCim]

Some background.

Tyres: Hankook K104's running pressures around 38psi dry and 44psi wet.

Suspension: Full SK whiteline/bilstein kit

Alignmen: SK's reccomended, -2mm toe on the front, 1 degree negative front, 0.5 degrees negative rear, 0mm toe rear

Driving condtions: 2 full drives of the great ocean road, 25% of 300km at hard style driving. 3x winding road driving sessions 50-60km distance EACH @ fast style driving. Regular city driving

This is a front passenger wheel. The "forward" direction of the tyre is towards the right of the picture

My rears just show a tiny bit of camber wear.

I am not looking to "fix" this issue, just curious why it happends (I rotated my tyres today anyway.

Here are photos of my wear pattern

[beastien]

Mine's doing exactly the same thing, on standard suspension, had a wheel alignment a few months ago.

I'd like to know what causes it aswell.

[not a nissan]

I had the same thing after a track day. I put it down to the tread blocks moving round?

[AlexCim]

Well, my car has heaps of weight over the front wheels and i tend to understeer then oversteer if on the edge.

However, the rear does not produce that wear pattern at all, its just pretty even wear.

[blind_elk]

Theory - the rears always have the same "angle of attack" on the road surface. The fronts are forever changing (steering), so they are subjected to higher lateral frictional forces.

Sounds good to me.

[danielson]

feathering from too many burnouts...haha

[AlexCim]

hmmm, changing sounds good, but this is a fixed pattern on the tyre, its exactly equal on both sides and specific to only the outside of the tyre?

well, ill drive the old rears on the front for a bit, see what turns out.

[Sydneykid]

Caster change angle, only on the front, causes feathering of the outside edge where the tread blocks are loaded. Doesn't do it on the inside of the tyre because it has negative camber to offset the positive caster.

cheers

[siksII]

i had the same thing but on a MUCH larger scale on monday, there were literally molten rolls of rubber coming off the front of the tread about three times the size of yours

[T04GTR]

from the look of it youve got to much toe in.

get a wheel alignment. and ACTUALLY ASK them to set it up zero toe

or 2-3mm toe out if you hack up the old pac.:ie. drive it hard

or 0.5-1mm toe in if you just nanna it

also check to see if your caster bushes are ok

if you dont ASK THEM they wont do it. theyl just look at the screen and see if it in the green and straight ahead. trust me i know....

[AlexCim]

I am using the wheel alignment settings SK reccomended with 2mm toe in on the front.

Ive got new castor/camber(f/r)/subframe bushes and bilsteins/whiteline springs/swaybars.

[T04GTR]

to much toe in....no disrespect s.k but tooo much toe in

[T04GTR]

working for subaru. there spec is 1.5-2mm toe in and there tyres always look like that. i set them up at 0 or .5mm out

that way the wheeles arnt fighting each other while cornering,instead one is pulling the other around(ie: the inner wheel is turned out more helping drag the front of the car around.

good for reducing understeer aswell