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BIKELAND > FORUMS > ZX-14.com > Thread: Tire question NEW TOPIC NEW POLL POST REPLY
jdrill04


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posted September 15, 2009 07:14 AM        
Tire question

What do all the numbers mean on the tires. for example... 180-55-17.
Whats the difference between a 180-50-17 and 180-55-17

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Shane661


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posted September 15, 2009 07:17 AM        Edited By: Shane661 on 15 Sep 2009 21:28
The first number is the width, in mm. The second number is the percent of the width, in height. The third number is the diameter of the wheel that it fits.

In your two examples:

180 mm wide and .55*180 = 99mm tall
180 mm wide and .50*180 = 90mm tall

17 is the diameter wheel that they fit, in inches.

Shane

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gilberjj


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posted September 15, 2009 07:33 AM        
shane is right....... I believe the second number is called the "aspect ratio." It's a very funky way to measure because it's all relative to how wide the tire is. For instance, a 180 55 17 will have a shorter sidewall then a 190 55 17.

0.55*180=99.0
0.55*190=104.5

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jdrill04


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posted September 15, 2009 07:58 AM        
thanks guys very much appreciated
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derpie


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posted September 15, 2009 02:49 PM        
quote:
The first number is the width, in mm. The second number is the percent of the width, in height. The third number is the diameter of the wheel that it fits.

In your two examples:

180 mm wide and .55*180 = 99mm tall
180 mm wide and .50*180 = 90mm tall

17 is the diameter wheel that they fit, in inches.

Shane


So will a 200/50/17 give me more of a contact patch in the twisties ?

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Flame On


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Fuel Air & Spark
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posted September 15, 2009 03:49 PM        
Tires are also date coded
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INTIMIDA2OR


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posted September 15, 2009 04:09 PM        
quote:
quote:
The first number is the width, in mm. The second number is the percent of the width, in height. The third number is the diameter of the wheel that it fits.

In your two examples:

180 mm wide and .55*180 = 99mm tall
180 mm wide and .50*180 = 90mm tall

17 is the diameter wheel that they fit, in inches.

Shane


So will a 200/50/17 give me more of a contact patch in the twisties ?


In a word NO. Now if it were the motogp 200/55-17 then yes you would have more contact patch in the twisties. Otherwise the 190/55 -17 or 190/50 -17 would offers the best contact patch for twistie use.
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KLD


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posted September 15, 2009 04:26 PM        Edited By: KLD on 16 Sep 2009 06:26
http://lmgtfy.com/?q=What+do+all+the+numbers+mean+on+the+tires
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INTIMIDA2OR


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posted September 15, 2009 04:42 PM        
Results 1 - 10 of about 5,170,000 ... too many damn results!!!
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*Lee*

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Fuel Air & Spark
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posted September 15, 2009 05:30 PM        
I prefer 180 for twistys 190 at most 200 overkill
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derpie


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posted September 15, 2009 09:08 PM        
quote:
quote:
quote:
The first number is the width, in mm. The second number is the percent of the width, in height. The third number is the diameter of the wheel that it fits.

In your two examples:

180 mm wide and .55*180 = 99mm tall
180 mm wide and .50*180 = 90mm tall

17 is the diameter wheel that they fit, in inches.

Shane


So will a 200/50/17 give me more of a contact patch in the twisties ?


In a word NO. Now if it were the motogp 200/55-17 then yes you would have more contact patch in the twisties. Otherwise the 190/55 -17 or 190/50 -17 would offers the best contact patch for twistie use.


Thanks

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eklipse636


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posted September 15, 2009 09:48 PM        
The 200 is so wide on the 14 rim that is shapes the tire so you can't use all the sides. The only example I can think of would be like C Channel metal. I can lay my bike down in a curve and the front tire will be all the way to the edge but my 200 rear will have over 1" left untouched. I got one bc that's all they had. I wouldn't reccomend one to anyone unles you just want it to look cool.
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derpie


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posted September 15, 2009 10:29 PM        
quote:
The 200 is so wide on the 14 rim that is shapes the tire so you can't use all the sides. The only example I can think of would be like C Channel metal. I can lay my bike down in a curve and the front tire will be all the way to the edge but my 200 rear will have over 1" left untouched. I got one bc that's all they had. I wouldn't reccomend one to anyone unles you just want it to look cool.


I figured wider tire more of a contact patch kinda like a corvette with its wide tires .

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Shane661


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posted September 15, 2009 10:30 PM        
quote:
quote:
The 200 is so wide on the 14 rim that is shapes the tire so you can't use all the sides. The only example I can think of would be like C Channel metal. I can lay my bike down in a curve and the front tire will be all the way to the edge but my 200 rear will have over 1" left untouched. I got one bc that's all they had. I wouldn't reccomend one to anyone unles you just want it to look cool.


I figured wider tire more of a contact patch kinda like a corvette with its wide tires .


Wider tire, but not a wider rim. Think of a beach ball.

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derpie


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posted September 16, 2009 12:06 AM        
hmmmn like a upside down mushroom ? just seems weird that the zx12 came with them .
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Shane661


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posted September 16, 2009 12:32 AM        
quote:
hmmmn like a upside down mushroom ? just seems weird that the zx12 came with them .


That was a marketing decision, I assure you. I have a 12R, and I run 180-190 tires on it...

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posted September 16, 2009 02:51 AM        
I always considered 200 & plus tires were just for show and had no extra riding benefits from them
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derpie


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posted September 16, 2009 08:44 AM        
ok thanks you for your wisdom
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INTIMIDA2OR


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posted September 16, 2009 02:37 PM        
Now heres a 200 tire that is designed for high horespower cornering!
http://viets-performance.com/Trackside-Support/Dunlop-D211GP-DOT-Race-Tires/Dunlop-D211GP-NTEC-200-55-17-Rear;jsessionid=0a01074d1f43515d4a6b933d4af5beffd4187fe62fdf.e3eTaxaQbxmTe34Pa38Ta38Pbh50
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*Lee*

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busa


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posted September 16, 2009 02:39 PM        
quote:
Now heres a 200 tire that is designed for high horespower cornering!
http://viets-performance.com/Trackside-Support/Dunlop-D211GP-DOT-Race-Tires/Dunlop-D211GP-NTEC-200-55-17-Rear;jsessionid=0a01074d1f43515d4a6b933d4af5beffd4187fe62fdf.e3eTaxaQbxmTe34Pa38Ta38Pbh50
hi

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Flame On


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Fuel Air & Spark
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posted September 16, 2009 05:15 PM        
never heard anybody using the 200 less is more faster to rebound from side to side
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INTIMIDA2OR


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posted September 17, 2009 07:46 AM        
Um AMA superbike racers use them : http://www.dunlopracing.com/fitment-2009.html
Maximized for leaning over with their high horsepower machines. Think of these new tires as a Drag slick for the corners
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*Lee*

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Shane661


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posted September 17, 2009 07:55 AM        Edited By: Shane661 on 17 Sep 2009 21:57
I don't know those super tall race tires might fit on the rim...but I can assure you that the 200/50 tires are not the hot ticket for quick handling on your street bike.
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INTIMIDA2OR


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posted September 17, 2009 10:31 AM        
If its good enough for the AMA then it's definitely overkill for the street! Probably why the Race spec 200 tires are not available to the public
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*Lee*

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posted September 17, 2009 01:14 PM        Edited By: Flame On on 18 Sep 2009 03:19
I get AMA tires from ebay 180 190 1.0 1.3 compound Pirelli super corsa dragons unused sponsor left overs for track use
never seen any 200s

Overkill
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