Tire tread warning-> Why are there 2 types of lines?! (Mazda3)

[JEDI]

I have 35k miles on my Mazda3i and i see the tread warning line on my Toyos were flush with the tire. This was on the outside most groove.

I thought 35k is too soon especially since I rotate my tires.

Then I notice the middle grooves had shallower warning lines. I'm assuming this is the real tread warning line.

If so, then what's that outside line?

Edit:
PIC

 

[olds]

TTIWWP

 

[Zorro]

Originally posted by: JEDI
I have 35k miles on my Mazda3i and i see the tread warning line on my Toyos were flush with the tire. This was on the outside most groove.

I thought 35k is too soon especially since I rotate my tires.

There I notice the middle grooves had shallower warning lines. I'm assuming this is the real tread warning line.

If so, then what's that outside line?

Buy some new tires 35k on factory tires is good. Spend the money and be safe don't kill me

 

[Pacfanweb]

I think those are probably rotation indicators. Tread wear indicators that tell you the tires are worn out are usually 1/16".

 

[JEDI]

Originally posted by: Pacfanweb
I think those are probably rotation indicators. Tread wear indicators that tell you the tires are worn out are usually 1/16".

What are rotation indicators?

 

[Pacfanweb]

Originally posted by: JEDI

Originally posted by: Pacfanweb
I think those are probably rotation indicators. Tread wear indicators that tell you the tires are worn out are usually 1/16".

What are rotation indicators?

When the tires wear down to the rotation bars, you're supposed to rotate them to another axle.

I don't know anyone who actually uses them....most folks just go by mileage.

 

[JEDI]

Originally posted by: Pacfanweb

Originally posted by: JEDI

Originally posted by: Pacfanweb
I think those are probably rotation indicators. Tread wear indicators that tell you the tires are worn out are usually 1/16".

What are rotation indicators?

When the tires wear down to the rotation bars, you're supposed to rotate them to another axle.

I don't know anyone who actually uses them....most folks just go by mileage.

thx. but that means it's only useful once unless tires come with different height rotation bars?

 

[jagec]

Don't use the treadwear indicators, use a tread gauge.

 

[randomlinh]

Originally posted by: jagec
Don't use the treadwear indicators, use a tread gauge.

ding ding ding! my stocks are 1/32" in the center... heh (yes, I know it's from over inflation).

 

[Exterous]

Yeah, 35k isn't bad on factory. We're passing 36k on our civic and we need to get new tires this fall

 

[WannaFly]

I have 35k on my Mazda3 and just got new tires - mine were past the wear line. I'd say get new.

 

[WannaFly]

oops, double post.

 

[BD2003]

Originally posted by: JEDI
I have 35k miles on my Mazda3i and i see the tread warning line on my Toyos were flush with the tire. This was on the outside most groove.

I thought 35k is too soon especially since I rotate my tires.

Then I notice the middle grooves had shallower warning lines. I'm assuming this is the real tread warning line.

If so, then what's that outside line?

Sure it's actually shallower? It's possible you were running underinflated, and wearing on the outside of your tires more than the inside.

 

[JEDI]

Originally posted by: BD2003

Originally posted by: JEDI
I have 35k miles on my Mazda3i and i see the tread warning line on my Toyos were flush with the tire. This was on the outside most groove.

I thought 35k is too soon especially since I rotate my tires.

Then I notice the middle grooves had shallower warning lines. I'm assuming this is the real tread warning line.

If so, then what's that outside line?

Sure it's actually shallower? It's possible you were running underinflated, and wearing on the outside of your tires more than the inside.

oh.. :Q

going to check... thx

(now where's my high tech tread measuring device, better known as a penny.)

 

[thomsbrain]

if you're wearing more on the outside, you're probably underinflated. and you need to go by what is the most shallow, because that is where you'll have a failure, and also where the car has been putting its weight. if you wear to any indicator, you need new tires. as others have said, 35k is what you should expect from many tires, especially factory tires. there's a reason all those certified-used cars on dealer lots have new tires... it's because the originals were bald when the lease came back!

 

[JEDI]

Here's a PIC

So what's that bar in the upper half of the pic?

 

[thomsbrain]

Originally posted by: JEDI
Here's a PIC

So what's that bar in the upper half of the pic?

ah. i don't think those are what we talk about when we talk about wear indicators. usually there is a strip or band around the circumference that will start to show when the tire gets REALLY low. those tires aren't really low yet. i think you can still drive on them for a while without worrying about it.

 

[Cattlegod]

yeah, you have another 10k on those tires easy.

 

[JEDI]

Originally posted by: Cattlegod
yeah, you have another 10k on those tires easy.

thx

but what's that bar in the upper part of the pic?! ?!?!?!?!?!?!?!?!?!