Hairline Cracks Along Tire Bead - Toyota 4Runner Forum

Chilow · 07-10-2020, 07:53 PM

While rotating my tires, I discovered that all four tires have hairline cracks on around the head area. I attached a photo. Is this normal? Tires have roughly 20k miles. These are Falken Wildpeak AT3W in LT285/70/17 40 PSI cold.

LandCruiser · 07-10-2020, 07:56 PM

Look like some old ass dry rotted tires. How many years have you had them?

Chilow · 07-10-2020, 08:10 PM

Quote:

Originally Posted by LandCruiser

Look like some old ass dry rotted tires. How many years have you had them?

Purchased in October 2018 so just shy of 2 years.

Jpilot · 07-10-2020, 08:17 PM

Check the manufacturer date. Not unheard of for a tire shop to sell old tires..

Chilow · 07-10-2020, 08:42 PM

Just checked and all 4 say 2518

Mutant138 · 07-10-2020, 09:07 PM

Quote:

Originally Posted by Chilow

Just checked and all 4 say 2518

If you got them at discount or w.e. have them swap em out.

Chilow · 07-10-2020, 09:58 PM

Quote:

Originally Posted by Mutant138

If you got them at discount or w.e. have them swap em out.

I did a purchase from them actually. They’ll swap it even if the date code is the same year as when I purchased them?

jp.vegas · 07-10-2020, 10:10 PM

Yeah those look like the start of dry rot for sure.

GupsT4R · 07-10-2020, 10:32 PM

Looks like my old LTX MS2..which were notorious for sidewall cracking due to premature dry rot

ElectroBoy · 07-11-2020, 02:25 AM

Maybe it’s latent damage from when they mounted the tires without enough lube, and the heat and aging is making it more apparent.
That little chip is suspicious.

TRD PANTHER · 07-11-2020, 04:31 AM

I’m curious if these were made in the U.S. or China. Also, what load rating? SL or E load?
I’m guessing E load since you are at 40psi cold.

jp.vegas · 07-11-2020, 01:30 PM

Quote:

Originally Posted by ElectroBoy

Maybe it’s latent damage from when they mounted the tires without enough lube, and the heat and aging is making it more apparent.
That little chip is suspicious.

The "P" right above that is mangled too. I'm betting he hit something.

02SE · 07-11-2020, 01:40 PM

Quote:

Originally Posted by TRD PANTHER

I’m curious if these were made in the U.S. or China. Also, what load rating? SL or E load?
I’m guessing E load since you are at 40psi cold.

The OP said LT in the original post. The '118' load rating means it's a 10 ply rated, load range E.

That level of cracking is a bit concerning at only 2 years old. Unless he had over say 45k miles on them. At only 20k I think it's too soon and not acceptable for that level of deterioration.

zonzin · 07-11-2020, 02:31 PM

Back in the day my dad would wipe brake fluid on the cracked sidewalls, looked good as new.

.

TRD PANTHER · 07-11-2020, 02:49 PM

Quote:

Originally Posted by 02SE

The OP said LT in the original post. The '118' load rating means it's a 10 ply rated, load range E.

That level of cracking is a bit concerning at only 2 years old. Unless he had over say 45k miles on them. At only 20k I think it's too soon and not acceptable for that level of deterioration.

You’re right. I missed the LT. Another reason I’m asking is that I heard most of the E loads are made in the US and that the SL’s like mine are made in China.

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