Scalloping Fronts?

[baron25]

Has anyone else had problems with their front tyres scalloping(wearing unevenly, numerous flatspots on inside)? I took my car in to have it checked out at Pedders, as i thought the noise was a wheelbearing, and they told me it was actually that my fronts were scalloping badly on the inside, which normally means a collapsed shock or two, but strangely mine were fine. He then put it down to cheap tyres, and that my wheels he'd never seen on a skyline before so they may not have been suitable for it (but i think he'd never seen NA wheels before).

Long story short, one set of new wheels and tyres later, and it's starting to happen again. Anyone had this before? or should i just head back there, with the suspension report and suggest maybe they got it wrong, and ask what they'll do to fix it?

[Amec]

what was the camber reading on the fronts? they mentioned your shocks were fine but how old do they look?

[baron25]

well, they're the ones that were on the car when it came across. so presumably the original shocks. It'd only done 56k at the time, and they've never given me trouble so i never considered a problem.

Is there an easy way to check the camber (i know comparatively little when it comes to susp.)?

[Amec]

Is there an easy way to check the camber (i know comparatively little when it comes to susp.)?

it would have been the perfect opportunity while your car was at pedders to get them to read your camber settings. I am surprised that they didnt unless it is on your report? its pretty difficult to tell what camber you are running with the naked eye especially if its only 1 or 2 degrees. if you are running too much negative camber (which is good for handling but bad for tyre wear) your tyres will wear on the inside.

but that doesnt explain the scalloping effect. I would get a second opinion from someone like Fulcrum Suspension.

[Beer Baron]

well camber is not adjustable on a 33 GTS so forget about that. neither is caster. they are both worth checking purely to make sure nothing is bent, but they cannot be adjusted. I would say most likely this is being caused by incorrect toe or possibly a bent suspension arm. how does the car feel to drive?

[ZENNON]

I would get a second opinion from someone like Fulcrum Suspension.

+1

[baron25]

same as it always did really, i've never noticed anything different, slight pull to the left when you're not holding the whell maybe. I did have a low speed impact a while back (rearended a motorcyclist at an intersection) - maybe that did something.

Are these Fulcrum guys good? i've never heard of them before.

[igota33]

i got the same problem. i had to take my shocks out when going over the pits and found my shocks are rooted. can be compressed by hand. this was about 2 months after pedders said they were in perfect working order. go somewhere good. a lot of bogans work at pedders.

[Amec]

same as it always did really, i've never noticed anything different, slight pull to the left when you're not holding the whell maybe. I did have a low speed impact a while back (rearended a motorcyclist at an intersection) - maybe that did something.

Are these Fulcrum guys good? i've never heard of them before.

you've probably never heard of Murray Coote before though either

[GTS20X]

As previousley mentioned worn shocks will wear the tyres like this, another cause could be hard braking as the wheel alignment changes under hard braking. You can eliminate the wear by rotating the tyres at regular intervals (if you have the same size wheels & tyres front & rear or have the tyres turned on the rims to swap side to side if you have directional tyres)

Carlos

[r33pr]

im an aligner by trade and i just fixed this on mine it was worn out caster rod bushes and i completely f*(ked the inside edges.neway i would get a alignment done asap when was the last time u had one done they should be done at least once a year or at least when you get new tyres

[baron25]

another cause could be hard braking as the wheel alignment changes under hard braking.

I doubt it would be that, my car's never seen a track or similar, the closest it gets to hard braking is jaunts along the Ocean Rd and surrounds

i just fixed this on mine it was worn out caster rod bushes and i completely f*(ked the inside edges

Yeah, i'm planning on an alignment asap. What did the caster rod bush replacement cost?

[r33pr]

I doubt it would be that, my car's never seen a track or similar, the closest it gets to hard braking is jaunts along the Ocean Rd and surrounds

Yeah, i'm planning on an alignment asap. What did the caster rod bush replacement cost?

well i did the work myself at work n got trade and it was about 100 bucks but i know the guys at pedders so i got really well looked after i think retail is 190ish but i wouldnt qoute me.good luck