Tire wear pattern

[whitebois]

I have a 91 i have been tracking a fair amount . I have dunlop dirrezza tires on it with something like 10 track days on them. I had the wheels off the other day and was looking at the wear pattern on them. They are both pretty well worn on the inside. There is a fair amount of tread left on the outside. My suspension setup in front is. -1 deg camber, -.03 in toe (-.06 total toe). The track i drive is high plains in colorado and it has a lot of right turns. So my question is-is this a normal wear pattern considering my setup? The left front has similar wear.
Thanks

 

[Briank]

Wear on the insides of the fronts is normal.

 

[dquarasr2]

To expand on what BrianK said, I assume your NSX is not a track-only car. So, if you are driving it on the street, you may end up with some wear on the inside.

If you have wear on the inside that is consistently progressive from the outside to the inside, that's wear from driving on the street with negative camber. If you have pronounced wear only on the very inside edge of the tires, that's negative camber combined with possibly too much toe out. But your specs are not outrageous so I would guess that the wear you mention is progressive across the tread and as Brian mentioned, expected and normal.

Of course this is in general and does not consider things like tie rods or other components that are worn out.

 

[whitebois]

Thanks -it is a gradual change across the tire. I dont put a lot of road miles on the car. So i would assume r compounds would wear a lot faster unless i get bidirectional ones i can rotate to the other side of the car.

 

[docjohn]

the more time the car spends turning the better:wink: Most folks with a lot of - camber (esp in the rear) , and more agressive toe will scrub down the inner edge just from regular street highway driving.That is why at every xpo I see at least one obliviuos owner with corded inner tires but the outside edge looks fine.

 

[nsxtasy]

i would assume r compounds would wear a lot faster unless i get bidirectional ones i can rotate to the other side of the car.

Yes, R compounds wear faster. But in track use, tires tend to wear on the outside of the tread, and you don't tend to see the rapid wear on the inside edge of the tread (which is indeed normal for street use).

Also note that the Star Spec is directional but symmetric. Which means, you can rotate the tires from one side of the car to the other by flipping them on the rim and remounting/rebalancing them.

HTH

 

[whitebois]

Thanks, did not know that so i will for sure get them remounted. Glad i posted!

 

[whitebois]

Putting on longer studs so had the wheels off. The left front tire is also more worn on inside but not close to the amount of wear on rt front inside. Just had alignment done, so can this be due to mostly rt turns on the track?

 

[CL65 Captain]

Putting on longer studs so had the wheels off. The left front tire is also more worn on inside but not close to the amount of wear on rt front inside. Just had alignment done, so can this be due to mostly rt turns on the track?

yep. My outside on the left wears and inside on the right. Run clockwise around the track. :wink: With a big ass front sway bar it's trying to keep the body from rolling and thus on right hand turns the inside of the right tire is still trying to provide grip. Then with street driving both insides wear because of the camber and toe, thus the right side shows more inner wear because its getting double - track and street.