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Ok, it turned out to be easier than I thought. I've completed the page, but as usual, I am going to let it sit so I can review it to make sure I did it right!

Just an FYI: Every year, Tire Business, a bi-monthly publication that specializes in news of interest for the tire industry, publishes various issues that outline certain aspects of the industry. Among those is a listing of all known tire brands and who owns them. They organize it by brand...

The reason the cord is important is that there is a pressure gradient through the tire. Cord fabric tends to wick air pressure and if exposed, will give a higher pressure where it is not wanted, so it will blow off the sidewall.

I stand corrected. That is indeed cord, and the normal response to seeing cord is to replace the tire. I don't know why I didn't see it before. Thanks for pointing it out.

I don't see any cords. Doesn't look like it's actually deep enough to get cords I think you're good to go?

First, I am not a rubber chemist, but here's my understanding: The brown stuff is actually rust colored, because it is an iron based antioxidant (AO). These AO's are in both the tire and some of the tire shine products. They don't harm anything - other than looks. Some interesting facts...

Perhaps it is time for me to talk about how car manufacturers set the tire pressure they list on the vehicle tire placard. Every vehicle manufacturer does this slightly differently, but all seem to wind up in the same ballpark. Long before the first vehicle is produced, the vehicle engineers...

Update: Notice of Public Hearing: Notice of Proposed Action: Replacement Tire Efficiency Program Rulemaking

I've always wondered about flat earthers. Rereading this thread gives me a little more insight.

Let's see if I have this right: This is a Nissan Rogue. Vibration starts at 70 mph, but only on newly paved highways. You are in Ohio. OEM wheels/Hankook tires = No Vibration OEM wheels/Michelin Primacy = Vibration OEM wheels/Michelin Cross Country 2 = Vibration OEM wheels/ Conti ProContact...

Maybe YOU are driving slowly when cornering, but some people aren't - and those are the ones this recommendation is aimed at. Besides, most people are cautious when it rains, but even the most cautious people will get surprised now and then. Again, this is why the recommendation exists.

When a car goes through a turn, there are 4 individual tracks. The rear tires do not follow the fronts.

Consider for the moment: There are tires with significantly different tread depths. Which ones hydroplane first? The ones with the less tread depth. Which tires offer the most traction? The ones not hydroplaning! If the rear of the car is not slowing down as fast as the front, the rear...

Did I read that right - that previous tires did the same thing? If so, that points to the road, not tires/wheels.

I don't think this is a tire and/or wheel issue. The way this is described is a third order harmonic and 3rd order harmonics are extremely rare when it comes to tires/wheels. I'm not saying it is impossible, but it seems incredibly unlikely.

The tire company I used to work for would put on a new product demonstration every year in mid to late February, when tire sales were slow. We had hundreds of dealers, journalists, and the like come down to our proving grounds and drive on the new products - against their competition. Wet...

I think it's ok as is. That part is usually just rubber, or at worst some bit of fabric that isn't important. But keep an eye on it - monitoring for leakage.

Ok, a bit more information about why I don't like what I see in the location of those cracks. When radial tires are made, the tread slab ends just about where the cracks are. There also some minor cracking in line with those major cracks. That makes me think that the top belt is lifting off...

I don't like the location, so I recommend replacing them now and keeping a close watch on the others.

Ya' know, Load Range D tires are sometimes known as 8 ply tires, so why do they only have 4 plies? Could it be that the plies can have different strengths? So couldn't you make a 2 ply as strong as an 8 ply? So maybe the number of plies isn't a good indicator of the strength?