[DriftKr6l]

So I took the M2 comp to a track day over the weekend.
Cool day, 45F, track was Autobahn South.
At the end of the day, I inspected teh tires, and this is how my fronts looked
Both fronts looked like this, rears were fine.
My alignment is also in the pics

[DRLane]

What's the question? Street tires on track under a heavy car with non neutral toe alignment = dragged rubber and wear.

Is it the little tears that are troubling you?

[DriftKr6l]

My Toe-in is fairly neutral.

The concern is the tears on the inside.

I tracked plenty of cars in my life time, some heavier than the M2 and never saw this type of wear.

Originally Posted by DRLane

What's the question? Street tires on track under a heavy car with non neutral toe alignment = dragged rubber and wear.

Is it the little tears that are troubling you?

[DRLane]

Originally Posted by DriftKr6l

My Toe-in is fairly neutral.

The concern is the tears on the inside.

I tracked plenty of cars in my life time, some heavier than the M2 and never saw this type of wear.

Toe is still dragging the tire and it doesn't take much. Toe in is also very interesting. End of the day it's an overwhelmed street tire with possibly too much camber and toe overheating the tire.

Good resource:

https://suspensionsecrets.co.uk/tyre...g-and-wearing/

"Inside Edge
If tearing is occurring on the inside edge of the tyre then there is likely to be too much toe present on the tearing wheel. Reduce toe angle to reduce tearing."

[///MPhatic]

Originally Posted by DRLane

Toe is still dragging the tire and it doesn't take much. Toe in is also very interesting. End of the day it's an overwhelmed street tire with possibly too much camber and toe overheating the tire.

Good resource:

https://suspensionsecrets.co.uk/tyre...g-and-wearing/

"Inside Edge
If tearing is occurring on the inside edge of the tyre then there is likely to be too much toe present on the tearing wheel. Reduce toe angle to reduce tearing."

Toe is something they are adding to keep the rear planted, yes? Reducing it causes oversteer, and must be corrected other ways to get the same plant, correct?

[DRLane]

Originally Posted by ///MPhatic

Toe is something they are adding to keep the rear planted, yes? Reducing it causes oversteer, and must be corrected other ways to get the same plant, correct?

It's the front he's referring to, but yes "toe in"rear can increase stability.

[dvas]

Brake less and take corners faster

[DriftKr6l]

Originally Posted by dvas

Brake less and take corners faster

I did a 1:39.248 in a mostly stock car, on Super Sports in 45F weather

[DRLane]

Originally Posted by DriftKr6l

I did a 1:39.248 in a mostly stock car, on Super Sports in 45F weather

Awesome driving and that's your answer man! Very capable car overpowering the super sports.

Ditch that toe or if you're going to accept the accelerated wear, at least get the benefit of turn-in with Toe Out.

[ZL9M2]

That's not a toe issue. Your toe settings are benign.

Too much neg camber or tire pressures too high in front. Did you take tire temps? I'd bet they were toasty on the inner edge.

[DriftKr6l]

That's my guess now as well.

My pressure monitor was showing 41PSI at end of session, so yeah, I think I was too high.

What do you guys usually run your super sports at on track days?

Originally Posted by ZL9M2

That's not a toe issue. Your toe settings are benign.

Too much neg camber or tire pressures too high in front. Did you take tire temps? I'd bet they were toasty on the inner edge.

[ZL9M2]

That's too high. Usually 34 - 35 hot. Very generally.. drop pressures until you see even tire wear and even tire temps across the tread face.

[dvas]

High tire pressures would most likely, all else remaining equal, result in higher wear in the middle of the tire rather than higher wear on either of the edges. The higher wear on the inside of your tires suggest that you are running too much toe or too much camber for a given speed. I agree that the toe in is rather benign so likely not the cause, though I would adjust to slight toe out at your next alignment. The only other thing I can think of that would result in higher wear on the insides is if you were occasionally locking up your tires under braking.

[M2joey]

I think your settings look good, great starting point for the track. Less toe is also better for inside tire wear.

It appears to me that you overheated the tires a bit. Not all that hard to do, when you feel the tires getting "greasy" back off a lap or two to let them cool down a bit. If you keep pushing, they will only get hotter. Michelin like between 34-38 psi hot.

[DriftKr6l]

Thanks guys.
Yeah, agree I need to pay attention to the pressures more

[Mavrick151]

Like others have noted, way to high of tire pressure. 32-33 should be target for these tires. Max on track psi should be no more than 36.

[SEAT TIME RULES]

There are a ton of factors that probably contributed to this wear pattern on his fronts.

Hot TP's way to high.

There is almost no wear on the outside 3rd of the tires.

Which is:

Front Neg Camber excessive for conditions (track temp) and pavement type, tires mechanical traction, suspension, or even driver skill or some combo of these.

I'd shoot for 33-34 Hot and run about 2.5 Neg camber with that tire on a track surface that cold.

I'd be curious to see how they look after your next track day with adjustments...

My $.02

[DriftKr6l]

My goal is to change one thing at a time, so next track day Ill control the pressures better, shoot for 36psi max and see what happens, next will be camber decrease if things still look bad.

Originally Posted by SEAT TIME RULES

There are a ton of factors that probably contributed to this wear pattern on his fronts.

Hot TP's way to high.

There is almost no wear on the outside 3rd of the tires.

Which is:

Front Neg Camber excessive for conditions (track temp) and pavement type, tires mechanical traction, suspension, or even driver skill or some combo of these.

I'd shoot for 33-34 Hot and run about 2.5 Neg camber with that tire on a track surface that cold.

I'd be curious to see how they look after your next track day with adjustments...

My $.02

[Dean_Clevername]

I see nothing wrong here. Just some superficial scuffing/tears. Heavy car and they were probably scrubbing a fair amount. Some tires show this more than others