So I was in need of new tires, so i picked up some bt-45's on line they were delivered the other day, I figured that would take a look at my current tires to see how much life I could squeeze out of my shinko 740's, well to my surprise the left side appeared to be fine, and the right side is kinda beat so what gives 

The front tire is fine no un-even wear but it will be replaced because I can. Now I remember that the old bt-45's that were OE from the factory were wore heavily on the left side I though this might be from the peak  in the road ways, now I'm second guessing that. I guess whats in order is to check the swing arm for alignment ? The old tires don't feel safe to ride on I'm not happy with the way the rear tire wonders at high speed. 

Tell me what you guys think I should do?

I know this is going to be the first question, yes the prior 2 owners dropped in they said that it was sitting still but the damage that was done was from a much higher speed. The bars where bent, engine covers were scratched, and rear faring scuffed.
The PO stopped riding to so I don't think a garage drop would scare any one off.



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As far as I know tire alignment is much more critical for chain/sprocket wear than it is for tire wear.

I can't see the picture too well, but it doesn't look bad to me. In most cases if you commute or have a favorite riding route, those will put more wear on one side than another. EX, with interstate riding you always exit to the right. Jug handle exits/onramps almost always curve to the right. Naturally, right side of the tire will wear more. I wouldn't worry about it unless the tire gets uneven enough that it becomes unsafe/unpredictable.

awww i dunno ... Badot... on the laptop screen ... (and the shading in picture does make it tricky) .. the worn down side is pretty worn!! ...

centreline is about down to the wear bars.... but the right side from what i can see ... is only a couple mm or a sixteenth above that!? have to be doing a hell of a lot of those turns you mentioned?!... or lapping around a roundabout every day for an hour? .. while the left side has (guessing) 50-60% left on it??

if my brain is working it out properly... the tire has been aimed towards the front left of the bike by a degree or a couple? .. exposing the right side to scrubbing?

better photo of just the old tyre from directly facing it would help Rob?! ..  ... oh and an upright photo!! ... my neck is getting a kink from tilting my head!! 

lol, I work over night so I'll get a new photo in the morning so you can see it better, I'll also take some measurements

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Check your rear wheel bearings as well. If you have bad or loose bearings it could cause the tire to lean one way or the other like camber on a car. If its happened on both sets of tires and the wear has been on both sides that would be where I would start. That would also cause the bike to wander and be unpredictable.

I read an article about this...article says it is NOT the crown in the road that wears motorcycle tires on the left side...

Article says it is because in the city, the left turns are always a longer arc than right turns....(In countries where you drive on the right...)

Article also says you can turn the tire the wrong way to wear the other side...as long as you don't ride in the rain!  (some tires are one way for reasons other than water shedding)

Cookie

Quote from: robfriedenberger on April 09, 2014, 09:43:30 PM
So I was in need of new tires, so i picked up some bt-45's on line they were delivered the other day, I figured that would take a look at my current tires to see how much life I could squeeze out of my shinko 740's, well to my surprise the left side appeared to be fine, and the right side is kinda beat so what gives 

The front tire is fine no un-even wear but it will be replaced because I can. Now I remember that the old bt-45's that were OE from the factory were wore heavily on the left side I though this might be from the peak  in the road ways, now I'm second guessing that. I guess whats in order is to check the swing arm for alignment ? The old tires don't feel safe to ride on I'm not happy with the way the rear tire wonders at high speed. 

Tell me what you guys think I should do?

I know this is going to be the first question, yes the prior 2 owners dropped in they said that it was sitting still but the damage that was done was from a much higher speed. The bars where bent, engine covers were scratched, and rear faring scuffed.
The PO stopped riding to so I don't think a garage drop would scare any one off.

Well, wheel bearing are good, and bike tracks strait when im off the bars.

Sadly I live in Pittsburgh so not ridding in the rain isn't an option it happens more than I'd like it to

Is there any measurements that can be taken of the swing arm or frame to verify that every thing is ok there?

looking at the new pics.... looks like standard commuter wear to me?

the previous pics were much harder to determine what was happening...

the centre may be worn a teensy bit more than on one side than the other... but my SD is getting close to looking similar!

got nearly 8000 km on it though and maybe another 2-2.5k km left?

i shant comment on chicken strips! ... cos i have same! .. lol

I agree it dont look to bad. Just have a think . . Do you use it every day for commuting??
How many miles a day in total??  retrace your route and work out how many left turns and how
Many  right turns?? (this includes bends in the road) , how long have the tyres been fitted?
And how many miles have been done on them in that time??

They are getting replaced ASAP, the rear one spins tire when taking off from red light and will lock up with very little brake pressure, I've ran it at 33-40 PSI with little to no change in traction. I do commute and ride for fun, so I can't really retrace my route haha but I'll ride any chance i get when its above 30F. The tires were installed in October of 2013 and have 3,000 mi on them now.....they had 2900 on them when I took the picture yesterday =)

The main reason why I'm replacing is due to wheel slip from a dead stop, I've been leaving marks at the lights......

Quote from: robfriedenberger on April 11, 2014, 03:22:26 AM
They are getting replaced ASAP, the rear one spins tire when taking off from red light and will lock up with very little brake pressure, I've ran it at 33-40 PSI with little to no change in traction. I do commute and ride for fun, so I can't really retrace my route haha but I'll ride any chance i get when its above 30F. The tires were installed in October of 2013 and have 3,000 mi on them now.....they had 2900 on them when I took the picture yesterday =)

The main reason why I'm replacing is due to wheel slip from a dead stop, I've been leaving marks at the lights......

wtf. are you racing everywhere...?

I don't it's considered racing when it's a gs500 lol


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Quote from: robfriedenberger on April 11, 2014, 02:28:39 PM
I don't it's considered racing when it's a gs500 lol

Ha ha!

As for the uneven wear, it looks normal to me.  I have always seen slight difference in mine, and my riding is mostly commuting. The only good things I have heard about the Shinko is the price.