Author Topic: It's that time of the year.... What tire are you sporting??  (Read 15130 times)

Offline smokin

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Re: It's that time of the year.... What tire are you sporting??
« Reply #30 on: September 09, 2016, 07:16:22 pm »
Pirelli Angel GT 190/50 "A" all the way. Outstanding handling,also fall into corners.Was looking to put Michelin PR4 GT on but not available,so on went the Pirelli's. So glad I did.
Reading on a BMW forum about cupping issues on the front Michelin PR4 GT tyres with the heavier BMW's. Interesting.
Anyone having these concerns with their Kawasaki's?
SONS OF ARTHRITIS RIDE HARD MEDICATE OFTEN.

Offline maxtog

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Re: It's that time of the year.... What tire are you sporting??
« Reply #31 on: September 09, 2016, 10:22:50 pm »
Reading on a BMW forum about cupping issues on the front Michelin PR4 GT tyres with the heavier BMW's. Interesting.Anyone having these concerns with their Kawasaki's?

I have not seen a single posting to that.  My OEM ["Brickstones"] ones did cup badly, however.

On a related note, I just noticed that my rear PR4GT is getting near the center wearband, although has lots of outer tread :(   Highway victim.   I replaced the worn-out OEM tires at 9,357mi on 04-10-2014.  Now at 23,500  = 14,143.  I think I can go several more months.  The front I am not so sure about, I need to look more closely.
Shoodaben (was Guhl) Mountain Runner ECU flash, Canyon Cages front/rear, Helibars risers, Phil's wedges, Grip Puppies, Sargent World seat-low & heated & pod, Muzzy lowering links, Soupy's stand, Nautilus air horn, Admore lightbar, Ronnie's highway pegs, front running lights, all LED, helmet locks, RAM Xgrip, Sena SMH10, Throttle Tamer, MRA X-Creen, BearingUp Shifter, PR4-GT, Scorpion EXO-T1200,etc

Offline fartymarty

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Re: It's that time of the year.... What tire are you sporting??
« Reply #32 on: September 13, 2016, 06:04:21 pm »
I recently cut a section out of my old rear PR4 GT  (50 series) just to see how much rubber was between the cord and the road when that tiny center sipe goes away.
Below you can see that the center sipe is still just barely visible but I doubt it's depth could be measured by mechanical means without the use of some sort of expensive laser tool.
There is really more rubber there than what I was expecting.
Since I did the cut I've also read where some have said that the GTs have only one ply on the sidewalls. I really have no expertise in tires, but it looks to me that it has 2 bias plys
(sort of an orange peach color in the photos) all over the tire and one radial ply (cream color) at the tread. No?

 ..anyway regardless of whether I'm even close in my ply counting, it would be nice if someone else would do the same with a non-GT PR4 just for comparison.
Just use a recip saw and a belt sander to clean it up a bit.
(click pic for full size)






Offline maxtog

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Re: It's that time of the year.... What tire are you sporting??
« Reply #33 on: September 13, 2016, 09:57:19 pm »
I recently cut a section out of my old rear PR4 GT  (50 series) just to see how much rubber was between the cord and the road when that tiny center sipe goes away.

Good/interesting info/photos.

It is somewhat reassuring.  I am trying to determine how long to run tires past wear bars- other than failure, the biggest risk is, of course, not having tread grooves.  And that will severely hurt wet riding.  Of course, if you don't ride in the rain, that part should not matter (but what to do if caught unexpectedly in the rain... yuck).

What is not shown in the photo are any of the center wear bar indicators, unfortunately.  I will assume that they are/were worn flat/even (or you would not have replaced the tire).
Shoodaben (was Guhl) Mountain Runner ECU flash, Canyon Cages front/rear, Helibars risers, Phil's wedges, Grip Puppies, Sargent World seat-low & heated & pod, Muzzy lowering links, Soupy's stand, Nautilus air horn, Admore lightbar, Ronnie's highway pegs, front running lights, all LED, helmet locks, RAM Xgrip, Sena SMH10, Throttle Tamer, MRA X-Creen, BearingUp Shifter, PR4-GT, Scorpion EXO-T1200,etc

Offline fartymarty

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Re: It's that time of the year.... What tire are you sporting??
« Reply #34 on: September 13, 2016, 10:37:20 pm »
What is not shown in the photo are any of the center wear bar indicators, unfortunately.  I will assume that they are/were worn flat/even (or you would not have replaced the tire).

Yeah, in hindsight I could have sliced it at a better location, to show the wear bars. I just picked a random spot because at the time I was only wanting to know how much rubber was between the cord and the center sipe. IIRC, I don't think the wear bars were reached yet as they are off center a bit and my tires always wear out in the middle, so I replace the tire when the center sipe disappears. If it works in my schedule I may take a set a little closer to the cord. That will have to wait though as my next set of tires are AVON Storm 3D x-m, and I doubt the current PR4GTs will be toasted before I need to change them for a longer trip in October.  I don't always wear the tires all the way down because my C14 is used more for trips, I rarely just go out for a ride on it as I have other bikes to ride local. Maybe a local day ride 3 - 4 times a year.  If I have only 1000-1500 miles left on the tire it needs to come off before I leave the house. Yes, I do waste a lot of tire, and yes the dark side has really been tugging at me. I may wear down (pun groan here  :P ) and fall into the dark side some day.

Still it would be nice if others would slice open their worn tires and then we could start a tire cross section photo library data base right here.  :thumbs:

Offline maxtog

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Re: It's that time of the year.... What tire are you sporting??
« Reply #35 on: September 14, 2016, 03:48:51 pm »
I can't do a cross section, but here are some comparison photos of my rear and front from straight-on and at an angle at 14,200 miles of wear.  I used a very expensive/nice camera and in HDR mode to try and get the best image I could... since looking at wear patterns in 2D is already challenging enough.

I don't normally do this, but I am posting at rather high resolution, since detail does matter in this case.
Shoodaben (was Guhl) Mountain Runner ECU flash, Canyon Cages front/rear, Helibars risers, Phil's wedges, Grip Puppies, Sargent World seat-low & heated & pod, Muzzy lowering links, Soupy's stand, Nautilus air horn, Admore lightbar, Ronnie's highway pegs, front running lights, all LED, helmet locks, RAM Xgrip, Sena SMH10, Throttle Tamer, MRA X-Creen, BearingUp Shifter, PR4-GT, Scorpion EXO-T1200,etc

Offline Ron Dawg

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Re: It's that time of the year.... What tire are you sporting??
« Reply #36 on: September 14, 2016, 04:15:16 pm »
Dang, Maxtog, what do you weigh? About 90#'s? :o

That's amazing to see @ 14,200 miles. I'll be shocked to see 8,000 from my new PR4 GT's, but I can hope!
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Offline maxtog

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Re: It's that time of the year.... What tire are you sporting??
« Reply #37 on: September 14, 2016, 05:16:33 pm »
Dang, Maxtog, what do you weigh? About 90#'s? :o

I finished my diet (mostly) so I am now 137 pounds.  Knowing me, that won't last long.  I will slip back into eating too much and within a year, be back at 155 pounds and ready to diet again.  Will I ever learn?

Quote
That's amazing to see @ 14,200 miles. I'll be shocked to see 8,000 from my new PR4 GT's, but I can hope!

There are so many factors that affect wear.  I think a lot of it is the type and condition of the roads.  But there is also weight, how much you spin (if any), how much crown, what temperatures, if the tires are kept inflated properly, etc.  Looking carefully at my tires at 14,200, I think I still have several months left on the rear (love to know what others think), and I am really not sure about the front.  But to me, it doesn't look like I am going to get what a lot of people claim as two rear to one front.  It looks more like 1.333 rear to one front.  And if that is the case, I will just replace them both at the same time due to the hassle and risk of taking it in (I can't do tires myself.... no way, no how).

It is interesting to compare to the photos from Marty.... Oh, hey, Marty, you didn't post on there how many miles were on the tire!!!  I wish I could take some of the unused side tread and slap it in the middle.... lots of highway miles compared to fun cornering.  Where I live, I gotta go quite a long way to get to "nowhere", where there are interesting roads (no lights, lots of turns/curves/etc).... plus I also rack up about 60 miles a week of slab just going to and from my friend's house once a week.  It adds up.  I do like these tires.
Shoodaben (was Guhl) Mountain Runner ECU flash, Canyon Cages front/rear, Helibars risers, Phil's wedges, Grip Puppies, Sargent World seat-low & heated & pod, Muzzy lowering links, Soupy's stand, Nautilus air horn, Admore lightbar, Ronnie's highway pegs, front running lights, all LED, helmet locks, RAM Xgrip, Sena SMH10, Throttle Tamer, MRA X-Creen, BearingUp Shifter, PR4-GT, Scorpion EXO-T1200,etc

Offline Ron Dawg

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Re: It's that time of the year.... What tire are you sporting??
« Reply #38 on: September 14, 2016, 05:39:07 pm »
Shoot man, ATGATT puts me at 260-270. I couldn't get to 137 unless I cut off all my limbs and then some (big hands you know...  ;))

I live in Ga and we're closing in on 90+ days in a row of 90+ temps. Come on fall!! Our gravel in the road is fragmented granite with lots of sharp edges and we ride two up a lot. I'd be happy with 8,000 miles. I've never gotten more than 6,500 on any tire of any kind and I ride pretty conservatively. I got 5,051 on the OEM "Stones.

Crap, I guess I just need cheaper tires, but I like the PR4 GT's so far.

Regarding your miles left, I'll start the pool with 700 miles based on the thickness of Marty's cross-section photo. I'd be toast in 200.

Thanks!
Ron
2014 C-14 Red

Offline Deziner

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Re: It's that time of the year.... What tire are you sporting??
« Reply #39 on: September 14, 2016, 08:07:05 pm »
I get about 14k out of a rear PR4GT and will probably make 2 to1 rear to front. Lots of miles on the slab...
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2008 C14, Muzzy exhaust, PCV, heated grips, Sergeant seat, PR4 GTs, Donovan headlight mod, Ronnies highway pegs, Cox rad guard, "The Big Rack", Grip Puppies, XM, many more made by me parts to come.....

Offline fartymarty

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Re: It's that time of the year.... What tire are you sporting??
« Reply #40 on: September 14, 2016, 10:09:40 pm »
... Oh, hey, Marty, you didn't post on there how many miles were on the tire!!!
I weigh around 180-185 geared up, but like I said the bike is almost always packed for a trip as I just don't day ride her much. So the side cases and top bag will be loaded but no pillion unless I have the cooler along for the trip.
That pictured tire is approx. 8500-8700 miles of usage. I've never gotten more than 9k out of a rear tire. The fronts always (well not the OEMs of course) look like they could go to 10-12k but I replace in pairs usually.   

Offline maxtog

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Re: It's that time of the year.... What tire are you sporting??
« Reply #41 on: September 14, 2016, 11:19:48 pm »
Shoot man, ATGATT puts me at 260-270. I couldn't get to 137 unless I cut off all my limbs and then some (big hands you know...  ;))

I don't know my ATGATT weight.  Never occurred to me to weigh myself like that :)  I will have to try and remember to do that someday.

Quote
Regarding your miles left, I'll start the pool with 700 miles based on the thickness of Marty's cross-section photo. I'd be toast in 200.

I hope it is more than that!  Looks like this could be turned into a fun game, although without any prizes.

It is interesting to read how huge the variance can be- Denzier's is similar to my mine, Marty's is somewhat more than half.
Shoodaben (was Guhl) Mountain Runner ECU flash, Canyon Cages front/rear, Helibars risers, Phil's wedges, Grip Puppies, Sargent World seat-low & heated & pod, Muzzy lowering links, Soupy's stand, Nautilus air horn, Admore lightbar, Ronnie's highway pegs, front running lights, all LED, helmet locks, RAM Xgrip, Sena SMH10, Throttle Tamer, MRA X-Creen, BearingUp Shifter, PR4-GT, Scorpion EXO-T1200,etc

Offline Conrad

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Re: It's that time of the year.... What tire are you sporting??
« Reply #42 on: September 15, 2016, 05:02:30 am »
Were they "A" spec version?.I have Angel GT "A" spec on the GTR1400,outstanding tyre in terms of handling,response and braking on both wet and dry roads.Wearing very well no abnormal wear patterns.The bike handling and response far better than I though possible on such a heavy bike when fully loaded for touring.

+1

I just ordered a new Angel GT/A after noticing the cords starting to show in the old tire. I got right around 10k miles out of the same tire and I never had to plug it! The tire will be delivered tomorrow. 
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Offline KevinRLi

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Re: It's that time of the year.... What tire are you sporting??
« Reply #43 on: September 15, 2016, 05:30:41 am »
+1

I just ordered a new Angel GT/A after noticing the cords starting to show in the old tire. I got right around 10k miles out of the same tire and I never had to plug it! The tire will be delivered tomorrow.


Yeah the Angel lovers are out there :) If they weren't back ordered until November they would be on my bike right now.

I could have went with a set of Avon's or something else but with all the hype about the PR's I figured I'd give them a try. Aside from not falling into the turns like the Angel's I'm not unhappy with them. They do grip well and I'm getting more confident with them in the turns. The Angels are just a completely different feel.

Offline Hooligan

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Re: It's that time of the year.... What tire are you sporting??
« Reply #44 on: September 15, 2016, 05:40:52 am »
Jeez.... ya'll a bunch of lightweights.... I tip the scale at 270 pounds (123Kg) buck naked, never mind with ATGATT.... I can add about 8 pounds (4kg) for my boots alone....

Then again, my normal cruising speed on any road is normally 85-100MpH(140-160Km/H), although our legal speed limit is at most 75MpH (120Km/H). Straights / flats is obviously playtime, then it goes up to 125-135MpH (200-220Km/H) on long trips. (hence the covered number-plate when I travel. Rather pay R500 for covering a number-plate, than R???? for a speeding fine.)

That obviously eats tyres, hence the reason for my PR4 (Normal) at 5200 miles (8500Km), looks the same as Maxtog's....

Now a bit :offtopic: I know, but talking of fines..... There is a member amongst us, that once got a R45 000 speeding fine. Authorities actually came and fetched him from his home, and locked him up to appear in court.  A few years ago, but still valid.....

Back on topic, I need to replace front and rear tyres a.s.a.p. While at it, I'll be replacing the batteries in the tyre pressure sensors as well. (joys of owning an '08model  :thumbs: ) I'll definitely be looking at the PR4's again, but the GT version. I bought the bike with a normal PR4 on the rear, and a normal PR3 on the front. Tyres were new when I bought the bike 7 months ago, and didn't see the need to replace them. If I could get my hands on a set of PR3's, I would most definitely not hesitate to buy them. I actually preferred the 3's to the 4's.
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