Front Inside Tire Wear... again
#1
Front Inside Tire Wear... again
Does this happen to everyone? I had this in my last set, got an alignment 3? Years ago... and still this?
PSS ... maybe better with PS4?
are these driveble... or should I get new before taking off winters?
PSS ... maybe better with PS4?
are these driveble... or should I get new before taking off winters?
#2
I would replace them. If they wore that edge that fast they won’t last much longer.
What at are your alignment settings?
I’ve had good luck with running -1 camber and no toe both front and rear.
What at are your alignment settings?
I’ve had good luck with running -1 camber and no toe both front and rear.
#3
Looks like excessive toe-in up front causing scrubbing like that. Three years is probably (ok definitely) too long to wait in between alignments especially if you daily drive it.
#6
this is is what they set it to
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#8
OP: your car has toe in in the rear (some is good for high speed stability) and toe out on one tire and toe in on the other up front. Also...25K miles on those fronts?!? That's enough anyway. Time for new If you want to extend the life of the tires then replace them and make sure you get as close to zero toe up front as possible.
Just as an example, here's what my last alignment looked like:
Last edited by Ludedude; 04-02-2019 at 05:43 PM. Reason: Added photo
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BLKSHRK (04-02-2019)
#9
It's not camber wear. Although that can happen, wear due to toe is much more prevalent than wear due to camber. In addition, the scrubbing nature of that wear is certainly due to toe; it happens on the inside due to camber but if the static camber was zero, the whole face of the tire would look like that.
OP: your car has toe in in the rear (some is good for high speed stability) and toe out up front. I bet it handles lively and the car turns in and changes directions quickly as that's a great auto-cross alignment setup but not good for longevity. Also...25K miles on those fronts?!? That's enough anyway. Time for new If you want to extend the life of the tires then replace them and make sure you get as close to zero toe up front as possible.
OP: your car has toe in in the rear (some is good for high speed stability) and toe out up front. I bet it handles lively and the car turns in and changes directions quickly as that's a great auto-cross alignment setup but not good for longevity. Also...25K miles on those fronts?!? That's enough anyway. Time for new If you want to extend the life of the tires then replace them and make sure you get as close to zero toe up front as possible.
Yea I would be worried about toe with those settings and the inside edge wear.
#10
I've run way more camber (-3.0+) up front on track cars that I also drove on the street and they don't look that way, even with Hoosier R comps or even slicks. Camber wear is nice and even, not chunked to hell. I get that it's the easy answer because you can see the camber, but it's just not accurate. Toe (in or out) is a much greater contributor to wear than camber is.
#11
It's the combo of toe out AND negative camber with over 25k miles. Looks like normal wear to me with that alignment.
I am currently at 0 toe up front and I think I'll dial in some toe out again. I ran 1/16" total toe out before and that was a nice compromise. Too much under-steer in the round-a-boots with zero.
I am currently at 0 toe up front and I think I'll dial in some toe out again. I ran 1/16" total toe out before and that was a nice compromise. Too much under-steer in the round-a-boots with zero.
#12
Agree. Putting in the Mercedes camber / caster bolts will give a fixed adjustment to reduce the negative camber. Needs to be done prior to alignment and costs about $40. Does not allow adjustments like other options but those are $500 and up and don’t come without drama for many.
I put them on mine when my PSS looked exactly the same after 20k miles.
I put them on mine when my PSS looked exactly the same after 20k miles.
It's the combo of toe out AND negative camber with over 25k miles. Looks like normal wear to me with that alignment.
I am currently at 0 toe up front and I think I'll dial in some toe out again. I ran 1/16" total toe out before and that was a nice compromise. Too much under-steer in the round-a-boots with zero.
I am currently at 0 toe up front and I think I'll dial in some toe out again. I ran 1/16" total toe out before and that was a nice compromise. Too much under-steer in the round-a-boots with zero.
#13
Agree. Putting in the Mercedes camber / caster bolts will give a fixed adjustment to reduce the negative camber. Needs to be done prior to alignment and costs about $40. Does not allow adjustments like other options but those are $500 and up and don’t come without drama for many.
I put them on mine when my PSS looked exactly the same after 20k miles.
I put them on mine when my PSS looked exactly the same after 20k miles.
#14
Camber doesn't wear tires at extreme rates. When suspension cycles driving down a road or entering, exiting a corner camber changes.
Imagine rolling a tire down a straight line across a shop floor. This is zero toe, zero camber.
Now tilt that tire (but keep it pointed straight) and ROLL it down that line. This is camber.
Now rotate that tire 1.8 degrees and DRAG it down the same straight line. This is toe
Which one is going to wear the tire more?
Imagine rolling a tire down a straight line across a shop floor. This is zero toe, zero camber.
Now tilt that tire (but keep it pointed straight) and ROLL it down that line. This is camber.
Now rotate that tire 1.8 degrees and DRAG it down the same straight line. This is toe
Which one is going to wear the tire more?
#15
Member
Joined: Feb 2019
Posts: 83
Likes: 8
From: Perth, Western Australia
2010 Ford G6E Turbo / 2013 C63 Coupe - AMG Performance Pack
I just had mine aligned recently when I had new rear tyres fitted. As you can see mine has less toe and less camber. Apparently mine already has the MB camber bolts installed.
Last edited by juggernaut1; 04-02-2019 at 07:49 PM.
#16
Yes, toe is worse than camber for wear. Not that camber has zero effect, it’s just not the driving force as you understand.
Last edited by Ludedude; 04-02-2019 at 10:56 PM.
#17
Member
Joined: Feb 2019
Posts: 83
Likes: 8
From: Perth, Western Australia
2010 Ford G6E Turbo / 2013 C63 Coupe - AMG Performance Pack
Camber doesn't wear tires at extreme rates. When suspension cycles driving down a road or entering, exiting a corner camber changes.
Imagine rolling a tire down a straight line across a shop floor. This is zero toe, zero camber.
Now tilt that tire (but keep it pointed straight) and ROLL it down that line. This is camber.
Now rotate that tire 1.8 degrees and DRAG it down the same straight line. This is toe
Which one is going to wear the tire more?
Imagine rolling a tire down a straight line across a shop floor. This is zero toe, zero camber.
Now tilt that tire (but keep it pointed straight) and ROLL it down that line. This is camber.
Now rotate that tire 1.8 degrees and DRAG it down the same straight line. This is toe
Which one is going to wear the tire more?
#18
#19
#20
I thought 25,000 Miles is good enough for the front tires on this car. With two sets of wheels, this can be good for 5 years, after which the rubber will be too old anyway, considering that when you buy the tires brand new, it's normal for them to be 1-2 years old. By 7 years old, they start to dry rot.
#21
If there was 0 camber, the wear would look slightly different and would have lasted longer before wearing through the inside.
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Ludedude (04-03-2019)
#22
MBWorld Fanatic!
Joined: Jan 2013
Posts: 3,731
Likes: 799
From: Toronto, Canada
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
+1 - all valid points above. As for that particular set, the rubber has completely cracked down to the carcass (which would also indicate that the tires were too old) and those are unsafe.
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Ludedude (04-03-2019)
#23
we’ll see what the prealignment figures are... may get a quote for pre-emotive headbolt repair too.
#24
Being conscious how low the tread is, I was caressing her trying to stretch as much life out of them as I could before putting her down for most of the winter. I plan on giving her some much needed attention like draining and pumping her with fresh fluids, adding some tasteful implants, and rewire her brain. I wanted to beat on her with a fresh pair of sneaks once the weather broke free.
While it's no excuse, I've worn down many tires well past this point and have never seen, let alone, experienced this. I check the tires just about every day keeping tabs on the condition. There was no warning, other than the warning tabs 😏, all of a sudden I just heard slapping coming from the front left end. When it happened, I remembered having come across this post and it occurred in the same area as yours. Hope it's just a coincidence...