I Think Its Scrubbing?

[Rekin]

Hey,

Purchased a set of wheels;

235/45 17x8 +30 offset (front)

235/45 17x9 +30 offset (rear)

Decided to lower car with kyb shocks and hks springs, sitting about 340mm from centre to guard.

Wheel Alignment results;

------------------------------------

CAS

Left: +5.17

Right: +6.32

Cam

Left: -0.33

Right: -1.29

Toe

-0.8

Cam Rear

Left: -1.52

Right: -1.40

Toe

Left: +1.4

Right: +4.5

"needs castor kit & front camber kit"

"upper control bushes on both sides knocking"

Car pulls slightly to the left and they stated this is due to camber/castor. Will be fixed when kits installed and aligned.

------------------------------------

Just took car for drive, mine are scrubbing bad at front.

Any dips in the road and then you hear a creeking noise coming from the fronts.

Not sure if its scrubbing or perhaps the springs/shocks? as it seems to only come from the front right?

Anyway to prevent scrubbing without rolling? As i dont want to remove inner guard as then it will expose my SMIC?

Thanks

Patrick

[Al]

Who did you go to?

Is that their final results, did they try to adjust the setting to get left and right even/equal?

[Rekin]

Wheel alignment was done at Traction Tyres in Rowville.

The only adjustment they could do were the toe and hence why they told me to purchase camber and castor kits.

I have seen people with +30 offset and same tyres and they get no scrubbing. Maybe my springs/shocks are too soft hrmm

Might book a pedders check and/or possibly get 215's on the front if that would help..

[Taleb Tyres]

if its only the soft plastic inner guard and you dont want to remove it, you can melt it back gradually as ive done a few times. All you need is a heat gun or decent hair dryer, and as it heats and softens up push back on it with something solid until you get enough clearance.

[Rekin]

  T187 said:

if its only the soft plastic inner guard and you dont want to remove it, you can melt it back gradually as ive done a few times. All you need is a heat gun or decent hair dryer, and as it heats and softens up push back on it with something solid until you get enough clearance.

sounds like a good idea, although im not 100% sure where abouts the tyre is scrubbing.

The lip or the top of the inner guard.. hrm

[Rekin]

Thinking about stretching 225's on the front

Although im afraid that scrub may still happen...

Should i go 215 or 225?

Thanks

[Sticky]

225 on a 8 inch rim isnt stretch.

also if the tyre shop you went to can only adjust toe, tell them you want your money back. they should be able to adjust camber, castor and toe if they know how to wheel align a car.

with the sizes and specs you have the car shouldnt be scrubbing, so just get a proper wheel alignment done, and that should fix it, but if your bushes are stuffed that may be a reason

[adam-__-]

Have you got the Pedders suspension check yet Pat? I still think it'll be something to do with your shocks.

[Al]

340mm from center of rim to guard is NOT low, so something is playing up. As you stated b4, get a suspension check and see what the results are.

Get the adjustment bushes and ensure no other bushes are badly worn.

I know on a 33 there is no front factory camber adjustment, but caster and toe should be adjustable. Toe, at front, should be 0, in my opinion and caster should be the same from left to right. The guys you went to obviously have no idea .

[Rekin]

had a look under the car, they are scrubbing just barely on the inner guard lining.

I think i might do the heating up and pushing back as its only a small section which is scrubbing.

I go to the same tyre mechanic as majority of racers go to. I bumped into Glenn Ridge as he was collecting his track rx7.

I have no doubts that the place doesnt know what they are doing

[Beer Baron]

  Sticky said:

225 on a 8 inch rim isnt stretch.

also if the tyre shop you went to can only adjust toe, tell them you want your money back. they should be able to adjust camber, castor and toe if they know how to wheel align a car.

with the sizes and specs you have the car shouldnt be scrubbing, so just get a proper wheel alignment done, and that should fix it, but if your bushes are stuffed that may be a reason

they can't adjust anything other than F+R toe and rear camber because there is no way to change the length of the other standard arms. it doesn't matter how smart they are there is no adjustment for front camber or castor in a standard skyline. so what they did, and what they said was 100% correct. so rekin will look a tad silly asking for his money back...

as for how to fix the scrubbing the only real options are raise the car, adjust the alignment, get different offset wheels, or smaller tyres.

[Al]

shit, i could have sworn there was a caster adjustment.

[Rekin]

  Beer Baron said:

they can't adjust anything other than F+R toe and rear camber because there is no way to change the length of the other standard arms. it doesn't matter how smart they are there is no adjustment for front camber or castor in a standard skyline. so what they did, and what they said was 100% correct. so rekin will look a tad silly asking for his money back...

as for how to fix the scrubbing the only real options are raise the car, adjust the alignment, get different offset wheels, or smaller tyres.

cheers for the clarification

Went back to the tyre place and they advised me to get 235/40 profile tyres. Which will have smalller diameter than a stretched 215.

They quoted me $400 for a pair of Yokohama AVS ES100 235/40 fitted + balanced.

That will be my last resort,

Tonight im going to heat up the inner guard and push it up to see if it clears, if not ill just have to purchase the low profiles

Thanks

Patrick

[Rekin]

Took a good look today and found out that its scrubbing at the end of the inner guard, just before the lip lol

So decided to use a heatgun;

using a peice of plastic we found to push it into place

Melted a couple of holes oops

Removed majority of parts which looked like to cause scrubbing.

Test run revealed reduction in scrubbing but still scrubbed in some heavy dips in the road.

Next monday, fabricating a rectangle peice to sit inside the lip with the inner guard lining ontop. Thereby pushing the lining couple of centimeters up towards the metal

Will see how it will turn out

[Beer Baron]

  Al said:

shit, i could have sworn there was a caster adjustment.

nope, the only bit on the front end that is adjustable from factory is toe. rear end has camber (not much) and toe.

[Ronin 09]

yep, my bet was front inner guard.

i have 7 deg castor on the gtr and it scrubs the inner

[Rekin]

Some calculations from this site;

http://www.bigcustomwheels.com/rt_specs.jsp

Not sure if this calculates tyre stretching values?

225/45 on 17x8

will give me 10mm extra clearance

235/40 on 17x8

will give me 24mm extra clearance

If my car was lowered 20mm and the 235/40 will give me extra 20mm clearance, would that mean that my clearance will be the same as it was before i lowered the car?

I had no scrubbing before lowering?

Should i get the 225's or the 235/40's?

Big price difference though

Thanks

[Taleb Tyres]

Still scraping?, you have to be patient if your gonna melt it back it took me an hour to remould front 3 series bmw guards to fit 22" wheels and theres still a little scraping, if all else fails just rip out the angle grinder

[Rekin]

a small update;

decided to remove the inner guard lining at the top, seemed the easiest way to end my troubles

Majority of scrubbing has disappeared but the ocasional hard bump in the road and a dip will still cause it to scrub..

I think its scrubbing on the lip...

My question is, should i;

- Roll the lip on the guards

- Put on 225/45's

- Put on 235/40's

Im hesitant on rolling the lip because once they are rolled they cant be restored back to original? or can they?

Thanks

[Taleb Tyres]

If you roll the guards you wont be able to restore them back to what they were, but theres really no disadvantage in doing so, the only risk you have is if the paint cracks while rolling them, but if the job is done correctly then you wont be able to tell it has been rolled.