thoughts about tyres

hello again , i want your opinion about something.
Is it a serious problem if a new tyre has date of built three years ago???

 

That depends on how it was store and/or how it feels. If it feels hard, like plastic, then yes it's a problem. If it feels more rubbery and "grippy", then you should be OK.

 

thank you very much for your answer but how i should now that before i put them on??? is there any "trick" to do for checking?
thanks anyway

 

Correct me where this is different with bike tires
I used to sell auto tires which comparably have a massive amount of tread different compounds etc.
Anyhow if they are not fresh or possibly not stored well and seem a little hard or slick when looking at the tread , they usually are still good to an extent. Once you run them for a little while the layer of harder rubber wears off, exposing normal softer rubber tread.

I imagine (as I am too inexperienced to do anything else) that a street bike tire with almost solid rubber rather than chunks of tread, would probably be hard for alot more of the tires life.
Also it may be too risky to have tires that are less grippy for longer than a short break in period.

Along the lines of the OP's question. If you get a tire that feels a bit hard or slick. How much is this likely to affect performance? Is there a way to tell if a tire will be ok?
Or is this just one of those things that if it isn't fresh rubber, then toss or return it.

Is there a set time from the build date when a tire that's in use should be changed, regardless of if there is tread left or not? Is it OK to go by the look of the tire and just making sure that it doesn't have lumps, a worn spot or cracked rubber?


I know I am asking for a lot of details that may not be available. I did just replace my rear tire with about 40% tread left, because it looked old and it was a 130/90 not a 130/80/18.t


I did find this

http://motorcycle.michelinman.com/advice/buying-guide/when-should-i-change-my-tires

 

The main difference between bikes and cars is that there are 4 wheels with a car and if one or more tires loses traction, there are a couple back ups. With a motorcycle, if one tire loses traction, most likely you're going down. I think when determining whether a tire is too old and/or too hard, might be relative. I know where I draw the line but not everyone has the same line in the sand. If you're commuting and not really pushing in the corners, it might be OK to use a "questionable" tire but you better leave a lot room for error. As far as telling before mounting, it's the same either way, feel the tire, if it feels slick, hard or otherwise not rubbery or tacky, then it's not going to change once you put it on a rim.

 

I don't know this for sure but I think there is more stress put on fewer tires when you are dealing with a bike. 2 tires rather than 4. Also, a blow out in one of four under normal situations should be easily overcome until you are able to bring the vehicle to a safe stop. Now. Think of what may happen with a blow out of a tire on your bike. I also believe the rubber in bike tires to be considerably thinner than those of a car or light truck.

I used to go through a set of tires a year so it really was not an issue for me. I was normally getting the latest and greatest in PR tires so they were always new. Now that I ride less, I guess I am going to have to watch that date more close on next tire change. Mind you, I will be OK till next year when I may need a new front and the age of the PR4 is still quite young.