Abnormal tire wear?

Volcom370Z

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Heres some pics... this is the drivers rear tire... so the left of the photo is the outside of the photo.

Mainly what I see is the depth in the groove to the far left compared to the other vertical grooves. Looks and feels shallower.

azn370z

I see that the outside inner is wearing out quicker. The wear doesn't seem to abnormal to me. If your cold air pressure is 35 then I would get an alignment, about $90.

__________________
2010 k23
H&R sport springs / Spc rear camber arms / SSR SP1 / Berk cbe / Varis cf lip / Nismo S-Tune side skirts

Volcom370Z

Thats what I was thinking too... at least someone else can see it too!

Hi-Step'n370Z

Thought I'd weigh in with my results.

Mine are wearing EXACTLY the same as Volcom370z's are. Got 6,700 miles on them, tire pressure is 38 psi. Measurements taken from outside to inside - in 32nds:

the front treads measure: 5,8,8,8.

The rear treads measure: 5,7,7,8 (maybe should drop these to 35 psi?)

I think the wear is good considering both front and rear are wearing the same and evenly, and the Z handles great.

But if I remember correctly, in New York, once any tread reaches 3/32, the tire won't pass inspection, even though most of the tire has a good 6/32 of tread depth left. I don't know this for sure, because I always replace well before 3/32 anyway on any car I drive. Being safe is non-negotiable for me.

However, especially with such wide tires, 4/32 or 5/32, especially on a car like the Z, could be dangerous on wet roads, so for a 1 or 2/32 loss of tire life, I'm not complaining.

I went into the Z knowing I'd be buying lot's of tires!

Volcom370Z

If anything you should raise pressure even more right? Over pressure should wear the centers of the tire more and underpressure the outsides. I do notice that i'm getting an even contact patch and i'm not getting any abnormal wear. a couple of things i've been thinking is that maybe the outsidesof our factory tires don't have as deep of tread as the rest of the tire? not sure where that is measured by the factory. secondly, there are tires on the market that have different compunds on different ribs of the tire, maybe we have a bit softer compund on ours?

Hi-Step'n370Z

It sounds so crazy that that would be true, but I wondered the same thing myself!

When I replace I'm planing to move up to a better tire, and I'll do my research then for the selection. I will check the tread depths on the next set just for the heck of it, just to see if they're all the same, but whatever they are, they are.

To me, with the Z it's all about handling, not how many miles the tires deliver.

Used to be that all tires were around 11/32 each tread depth, don't know about these type of tires.

I do have to say that for OE tires, these Bridgestone's do a really great job on the road. Can't really say anything bad about them. In fact, I really like them. Very pleased with them. Seems like I should move up for my next set, and I most likely will, but I don't know, these have been great tires so far.

Volcom370Z

I completely agree with you. I have no complaints about these tires despite the treadwear rating. Im thinking my next set is going to be PS2s... if all the production supercars (aside from the GTR) can run them, they are FAR good enough for the Z.

azn370z

I just checked my tires and I see the outer is wearing more quickly than the rest. I still have more tread than op. I'm been lowered for almost 11k miles, been lowered 8k with h&r.

__________________
2010 k23
H&R sport springs / Spc rear camber arms / SSR SP1 / Berk cbe / Varis cf lip / Nismo S-Tune side skirts