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Shinko 712f wear report (Read 306 times)
gizzo
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Re: Shinko 712f wear report
Reply #15 - 03/28/16 at 18:46:35
 
cheapnewb24 wrote on 03/28/16 at 18:24:40:
If excessive damping is the problem, then how do all those stiff-suspension fans like WD manage?

They just put up with it while they float their own boat. I only saw the pic on a mb phone screen but it doesn't look terrible. Maybe try lower tyre pressure and see what happens. Some tyres do it, some not. If you really can't handle it, try a ribbed tyre like the Avon speedmaster aka slidemaster. They don't do that: no sipes, just radial grooves.
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Re: Shinko 712f wear report
Reply #16 - 03/28/16 at 19:02:49
 
Try leaning the bike when making turns , really look at your pics! Next Continentals , Dunlops , Metzlers , etc. When you only have 2 tires that's not the place to skimp to save a few bucks. It could be a life or death decision !
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Re: Shinko 712f wear report
Reply #17 - 03/28/16 at 19:12:23
 
It looks fine to me.

I run about40 psi in the rear tire. Anything less feels too squirmy. Front tire gets a little more than recommended but nowhere near 40.
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Re: Shinko 712f wear report
Reply #18 - 03/28/16 at 19:25:05
 
Lower the pressure to 29psi,( wearing the center of the tread like that is a sign of overinflation) replace your fork oil with the correct viscosity and amount of oil, and double check the balance. Also check your rim for trueness. Get it up off the ground and spin it and make sure it doesn't look like it's hopping up and down when it spins.

I've got that same tire on my bike with about 2K on it and it's wearing  just fine, In fact it still looks just  about like it did when it was new, so I don't think it's the tire.
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Re: Shinko 712f wear report
Reply #19 - 03/28/16 at 19:26:50
 
Ruttly wrote on 03/28/16 at 19:02:49:
Try leaning the bike when making turns , really look at your pics! Next Continentals , Dunlops , Metzlers , etc. When you only have 2 tires that's not the place to skimp to save a few bucks. It could be a life or death decision !


Ruttly, I'm probably not the most aggressive leaner around, especially since I'm new, but I don't want to wear my tires flat. I have been on purposely commuting in the twisties. You have to look more closely at the pics. I do have chicken strips, but the extent of the darker patches represent my full lean angle. The center is simply dirty from being run on dirt roads. The rear tire seems slightly rounder than it looks in the pics, but, yes it is still worn pretty flat. Some of that wear was from the previous owners. I do have some 4-lane in the commute, though. There's a decent chance that Metzler is the replacement for the stock IRC tire. It is probably the second (or third, at most) tire that rim has ever touched.

Also, from what I've gathered, Shinko 712 gets pretty good reviews for the price, especially the rear. It's not like they are jinxed into being slick as axle grease just because they're cheap.  Wink Roll Eyes
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Re: Shinko 712f wear report
Reply #20 - 03/28/16 at 19:41:10
 
oldNslow wrote on 03/28/16 at 19:25:05:
Lower the pressure to 29psi,( wearing the center of the tread like that is a sign of overinflation) replace your fork oil with the correct viscosity and amount of oil, and double check the balance. Also check your rim for trueness. Get it up off the ground and spin it and make sure it doesn't look like it's hopping up and down when it spins.

I've got that same tire on my bike with about 2K on it and it's wearing  just fine, In fact it still looks just  about like it did when it was new, so I don't think it's the tire.



I wonder if the air pressure isn't the problem. I think that was the last thing I changed before I noticed this.

Not sure I'm ready to throw away my make do fork oil yet. It's liable to be just perfect come summer. But then, the rubber will also be softer and more easily worn... Undecided I'll think about it. 15 weight is the recommended. I doubt what's in there is too much heavier.

Any more thoughts?
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Re: Shinko 712f wear report
Reply #21 - 03/28/16 at 21:09:43
 
I'm gonna have to experiment a little with the pressure some more. I wonder if I don't like the handling of my tires better "over-inflated" to an extent. Undecided

Does anyone else think 37 psi is too much in the front? Does anyone think 37 psi is just right? Huh Does anyone else think that wear pattern is caused by too much air?
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Re: Shinko 712f wear report
Reply #22 - 03/28/16 at 21:16:29
 
what does the side of the tire specs state as COLD tire pressure?
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Re: Shinko 712f wear report
Reply #23 - 03/28/16 at 21:19:27
 
40 cold for the front. I think the Metzler rear specs a little more.
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Re: Shinko 712f wear report
Reply #24 - 03/28/16 at 21:29:05
 
from the Suzuki service manual for STOCK tires

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Re: Shinko 712f wear report
Reply #25 - 03/28/16 at 21:51:10
 
You don't inflate tires to the tire manufacturers max... you inflate them based on bike weight.  Use the bike manufacturers recommendation.
In our case, as RAt has posted,... it's 29 front 33 rear...
40 is too much. ..unless you weigh 500lbs... Huh
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Re: Shinko 712f wear report
Reply #26 - 03/28/16 at 22:16:51
 
My 712F stays at 32psi +/- a couple pounds. Which happens to be manufacturer recommended maximum inflation. Tire is going into summer 4, pushing 40k miles and still has a LOT of tread left, including molding whiskers.

Rear tire on Pokey was installed in 2000. Still has actual tread after 10 years of hard use, bike parked in 2010, turned parts bike in 2014. Not bad for a $39 Chi-com cheepy.

I routinely get 80-100k miles out of 50-60k mile rated tires on my pickups. You guys need to learn how to tune your suspensions.
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Re: Shinko 712f wear report
Reply #27 - 03/28/16 at 22:20:42
 
But don't you find that precise handling of over-inflation so nice, even if it does reduce traction and cause other problems? Oh well... can't win 'em all, right?  Roll Eyes
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Re: Shinko 712f wear report
Reply #28 - 03/28/16 at 22:23:13
 
WD wrote on 03/28/16 at 22:16:51:
My 712F stays at 32psi +/- a couple pounds. Which happens to be manufacturer recommended maximum inflation. Tire is going into summer 4, pushing 40k miles and still has a LOT of tread left, including molding whiskers.

Rear tire on Pokey was installed in 2000. Still has actual tread after 10 years of hard use, bike parked in 2010, turned parts bike in 2014. Not bad for a $39 Chi-com cheepy.

I routinely get 80-100k miles out of 50-60k mile rated tires on my pickups. You guys need to learn how to tune your suspensions.



HOW ON EARTH!?!?!?!?!  Shocked
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Re: Shinko 712f wear report
Reply #29 - 03/28/16 at 22:24:55
 
By the way, WD, how much do you and the bike weigh? What kind of suspension tuning did you have on that bike? Fork oil?
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