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ZR tyres

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Old May 3, 2007 | 08:17 AM
  #1  
drum1982's Avatar
drum1982
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Default ZR tyres

heloo can anyoane help me with this


what is the menning of Zr in all of that tyres sizing( 235/40/ZR17 92w).i know wyhat all the others mean but i can not understand what the Z stands for

thank you

P.S. sorry about my english
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Old May 3, 2007 | 10:31 AM
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jon@work
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Default

Z = speed rating
R = radial tyre construction (as opposed to crossply)

http://www.blackcircles.com/general/speedrating
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