Never Saw This Before: T31 GT - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 38 (permalink) Old 08-24-2020, 09:44 AM Thread Starter
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Never Saw This Before: T31 GT

Have known the time was coming soon for this tire. Had 7900 miles last time I checked records and this oddity had already started. Rode 290 miles Friday in the rain on this. Checked records and surprised to find this is now my all time longest wearing front tire at 8900 miles. This officially makes the T31 GT my favorite front tire. Cord showing in the bottom of tread grooves. The grooves are not gone yet but a line of cord is showing. How the heck did they make one narrow cord rib there?

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post #2 of 38 (permalink) Old 08-24-2020, 11:18 AM
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You're POSITIVE that's cord and not the mold markings?
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post #3 of 38 (permalink) Old 08-24-2020, 02:57 PM
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That's an antenna tread, intentionally there to dissipate static electricity.

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post #4 of 38 (permalink) Old 08-24-2020, 02:58 PM
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Ditto. I've never seen anything like that before.

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post #5 of 38 (permalink) Old 08-24-2020, 04:39 PM
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post #6 of 38 (permalink) Old 08-24-2020, 04:50 PM Thread Starter
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Quote:
Originally Posted by Liquidsilver View Post
You're POSITIVE that's cord and not the mold markings?
Yes, fingernail test proves it is hard and not paint. Tire has been mounted 9 months, 8900 miles.

I think it was there 1000 miles ago but didn’t pay much attention as the tread was deeper then.

Another posted a picture of his tire with more tread and same white markers. Am not going to worry about it until I have a white line half way around. Not until the markers merge into each other.

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post #7 of 38 (permalink) Old 08-24-2020, 04:54 PM Thread Starter
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Quote:
Originally Posted by Liquidsilver View Post
You're POSITIVE that's cord and not the mold markings?
If you’d be so kind please go look close at your front tire to see if you have similar?

2018 F-150 XLT SuperCab 4x4 2.7L
2016 FJR1300A
2016 Beta 430 RS
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2013 Tesla Model S 85
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post #8 of 38 (permalink) Old 08-24-2020, 06:10 PM
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If you’d be so kind please go look close at your front tire to see if you have similar?
I will certainly take a look when I get to the location of the motorcycle.

My T31 is a non-GT, and I've never had an ST tire go 5000 miles, but I'll take a look ASAP.
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post #9 of 38 (permalink) Old 08-24-2020, 09:54 PM
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Exactly the same showing on the T31GT front currently on my bike. I checked two other used T31GT fronts that I haven’t recycled yet, and same thing. Appears to be perfectly normal.
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post #10 of 38 (permalink) Old 08-25-2020, 08:46 AM
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Did you google antenna tread yet?
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