atturo tyres
 

i thought i would start a new thread, as ive just this minute heard back from my mechanic.

ive been running atturo tyres now 22 months and done about 60,000 km in that time.

a few months ago i got the car lowered using eibach springs, back and front.

not long after i noticed that the tyres seemed noisier that usual, and saw that i was getting this sort of cupping wear on the rear inner edges, so today i took it to the mechanic to check the rear alignment, and he decides that its not alignment but the rear shocks so he orders a new set of bilsteins, while in the process of fitting them, the mechanic notices that the rear tyre inner edges are showing signs of delaminating.

he says it seems the tyres cant carry the weight, now that seems weird seeing they are 22 months old.

so he is saying he will investigate further

maybe im getting new tyres sooner than i thought.

Check the toe on the rears. You want it at the minimum of the spec range.

Lowering it could make the camber worse. The camber by itself isn't a problem, but the combination of too much toe in plus camber will speed up wear on the inner edge of the rear tires.

yep thanks JCL, these guys that i use are very respected, as well as normal car servicing they look after the porches for our (Aussie) Porche cup series, they always have a bunch of exotic cars hanging about, i suspected however that when i got it lowered thay ran out of adjustment and i was originall making inquiries about camber kits.

i wasnt initally worried about the tyre wear as the fronts were wearing a little fast than the rears

but i didnt expect the cupping wear or the extra noise associated with it so thought it best to get it checked out

i am fairly concerned that the tyres are "delaminating" and will find out more when i pick the car up.

to date ive been fairly happy with the tyres and considered them a great deal, but i sure dont want them falling apart on me

Did you have it aligned when you lowered it? What were the specs then and now? I'm curious why he felt it was the shocks and not the alignment. Pics of the wear would be nice to just see what it looks like.

60,000km = 37,000 miles

Those are all-seasons right? I've only used summer performance tires and usually only get 10-12K miles on the rear set.

I would be throwing a party if I ever got 37K miles from ANY tires. :rofl:

yep alignment done after lowering, however im not sure thay had anough adjustment to get it to where it should be, when i first got this car i had them align the rear wheels to reduce the factory camber so as NOT to have the inner edges wear .

however once lowered i think that they were unable to get it the same, as it appeared to the eye that i now had more camber than originally, still not as much as stock but more than i would like.

im still waiting for them to ring a that i can pick the car up, so more info to follow

Well, do you feel they didn't have enough adjustment only now? Meaning only after you see the inner wear now.

Because I would think if they could NOT get it within spec (camber during alignment) they would have informed you. That's why I ask what were the specs then and what are they now. They usually hand you a sheet that has the specs after an alignment to show you before and after settings.

I have not had severe inner tire wear in any of my tires. Even with a bad passenger rear suspension item (control arm?) and it was just out of range with the camber. Of course, I have a different setup than yours.

I suspect you have alignment and suspension issues more than the tire being bad. However, those are new to the market so there may not be enough feedback yet.

Looking forward for more info.

no they didn't say anything as they were not using BMW specs, the standard specs call for to much negative camber and that accelerates the wear on the edge, they adjust for a more upright stance so as to reduce the inner wear, so what ever they set it to would be better that standard, even if they were at the end of the adjustable range, sorry if i,m not making that clear

i was aware of it, but the negative camber was visually not excessive and i was keeping an eye on it, and also as i said earlier a little extra wear on the rears at this stage in the tyres life was acceptable as the fronts were wearing quicker, i didnt want to be in a situation where i need to swap the fronts out and the backs be ok,

i understand that the tyres need to be replaced as a set so as not to up set the X drive system

Hmmm, you seem to have the opposite of what most people experience. Usually, the rears will wear out before the fronts. What kind of wear are on the fronts? Just even treadwear compared to the rears?

What's your setup? Staggered 20s or same wheels/tires all around?

i have 20" staggered, and the front tyres are wearing on the inner and outer edges, the rears up till now have been wearing perfectly evenly across the tread.

i put the front wear down to all the on ramps and roundabouts i go through to and from work, and i have to confess to pushing it a little, its fun pulling away from other sporty type cars hehehe