tyre size's

befdelta7 · Brolly Dolly Joined: 24 Aug 2006 Karma :

hi,
i got a few questions id liked answered.

i need a new rear tyre for my cagiva supercity,
its 150/60/zr17.

first question: whats the zr mean... speed rating??

second question: i have found a tyre on ebay which is 150/60/wr17 would this be ok to use on the bike?

third question: would a 160/60/17 tyre fit the bike (out of interest)

thanx for your replys Thumbs Up

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MarJay · But it's British! Joined: 15 Sep 2003 Karma :

ZR is 186mph + speed rating.

On a 125 I can't see that being a problem to have a W rated tyre, especially as W means 160mph! Laughing

(according to blackcircles.com)

a 160 might fit, but it would screw up the handling, make the steering slower and ruin the 160's profile so you won't be able to match it to the front tyre.

Remember you aren't *supposed* to mix and match tyre models or makes.
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befdelta7 · Brolly Dolly Joined: 24 Aug 2006 Karma :

so getting the 150 60 WR 17 tyre would be fine for my bike?

got a huge screw in my tyre the head of it is the size of my thumb nail Shocked

getting home today wasnt fun at all, the tyre was going down well fast every say 6mins of riding the tyre was flat had to put 50psi in it to get me to the next garage to put more air in it. then to top it off traffic police pulled me and by the time they had finished with me the tyre was completly flat an i was no where near a garage Evil or Very Mad

thanx for your replys
____________________
Dont do a wheelie in front of a traffic copper... it gets you 3pts and £220 fine.

gixxersixx · Trackday Trickster Joined: 17 Sep 2006 Karma :

the first figure is the tyre width in mm 150mm
the second figure is the the profile (height of the side wall) which is a percentage of the tyre width 60% of 150mm

zr = z speed rating with the r showing its a radial

the third figure is the rim size it will fit in inches 17 inch rim

160/60 will fit if theres enough space in the swing arm, it will be 10 mm wider and the sidewall will be 6 mm higher than the 150
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