Never Saw This Before: T31 GT - Page 2 - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #11 of 38 (permalink) Old 08-25-2020, 09:50 AM Thread Starter
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Originally Posted by RaYzerman View Post
Did you google antenna tread yet?
Yes. But this seems unusual for being white and beneath the wearing tread. Seems it would be harder to discharge static electricity if not in contact with the road. It is clearly a deliberate manufactured artifact.

Think I'll just have to wear the tire down until more of this mystery is exposed.

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post #12 of 38 (permalink) Old 08-25-2020, 12:37 PM
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The ME880 tires I had on my BMW K1200LT showed the same type of white stripe. I think that is the wear bar. Time to replace.

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post #13 of 38 (permalink) Old 08-25-2020, 12:47 PM
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If youíd be so kind please go look close at your front tire to see if you have similar?
Yes, mine has exactly the same thing. Mine's only about 800 miles old and it's only visible deep in the sipes, just like yours. I took a picture, but somehow my camera technique did more to prove the existence of Sasquatch than the cord, but it looks exactly like yours. I like the T31s just fine.
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post #14 of 38 (permalink) Old 08-25-2020, 01:32 PM
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I've noticed this on my current T30 GT rear and it got my attention. The tire has about 11,000 mi on it and is soon to be replaced. I'll be mounting a T31 non GT this time.

I did not notice the white stripe on the T30 front that recently came off. That tire had just under 12,000 mi.

So I'm very happy with the mileage and handling of Bridgestone tires on my bike. Just kind of peculiar with this cord looking anomaly. I'll keep an eye on it.
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post #15 of 38 (permalink) Old 08-25-2020, 03:45 PM
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RaYzerman is correct; it is an antenna thread. And when you are going down the road, it is in contact with the pavement as the tire flexes.

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post #16 of 38 (permalink) Old 08-25-2020, 03:49 PM
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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?
With all the tire threads going on this is actually a good testimonial to see. They aren't very expensive either, it looks like! Dang near same price as the Continental Road Attack set in my ebay watchlist already...hmm. How to do they handle the canyons?

EDIT: Actually yeah the set is quite a bit more expensive..haha

Last edited by AtlRiderrr; 08-25-2020 at 03:52 PM.
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post #17 of 38 (permalink) Old 08-25-2020, 10:25 PM
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With all the tire threads going on this is actually a good testimonial to see. They aren't very expensive either, it looks like! Dang near same price as the Continental Road Attack set in my ebay watchlist already...hmm. How to do they handle the canyons?

EDIT: Actually yeah the set is quite a bit more expensive..haha
T31’s (GT’s) are excellent tires IMO. More than capable of being ridden quite quickly in the twisty stuff (which I have to travel quite far for ).
The price to tread life ratio is very good...I get about 11,000-12,000 km out of a rear and about 16,000-18,000 km out of a front. Been using the Bridgestone T30/31’s for years now, many sets, and have never felt that grip (due to the tires) was a problem wet or dry. If a rider is finding the limits of them on public roadways, he/she is probably riding faster than is safe.
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post #18 of 38 (permalink) Old 08-25-2020, 11:37 PM
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Just to add to this, the T31 GT I have down in the basement also has a red thread halfway between centerline and edge of tread. I had swapped it out in search of source of front end vibration. It will go back on soon.


https://i.postimg.cc/rsdWTn06/2-F003...-B4-CF23-E.jpg
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Last edited by Boyitgobob; 08-25-2020 at 11:42 PM.
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post #19 of 38 (permalink) Old 08-26-2020, 08:19 AM
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Never seen anything like that before ! Antenna tread ? Ya learn something new all the time ! If I hadnít read this and had a set of these Iíd be freaked out & looking for a new set and from the pictures, being thereís so much tread left to have the cording showing Iíd be looking elsewhere, but since itís an intended design ...... I wonder if Bridgestone marketing had any input on this or if this is common practice elsewhere in the world ?
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post #20 of 38 (permalink) Old 08-26-2020, 10:23 AM Thread Starter
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Originally Posted by AtlRiderrr View Post
With all the tire threads going on this is actually a good testimonial to see. They aren't very expensive either, it looks like! Dang near same price as the Continental Road Attack set in my ebay watchlist already...hmm. How to do they handle the canyons?

EDIT: Actually yeah the set is quite a bit more expensive..haha
This very tire was $105 from Rocky Mountain 9-12 months ago.

The 290 miles prior to the picture was mostly in rain. I didn't go looking for trouble. Tire twitched a couple times on tar snakes in standing water. Am very happy with this T31 GT's handling even as worn as it is.

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