Tyre options

Discussion in 'Kawasaki 250cc In-line 4's' started by ZEUS, May 16, 2013.

  1. ZEUS

    ZEUS Member

    Messages:
    7
    Likes Received:
    4
    Trophy Points:
    13
    Joined:
    Apr 24, 2013
    Gender:
    Male
    Location:
    Sydney
    Even the tyres on the ZXR 250 are rare! I need to get a new rear tyre and I haven't had much luck on finding stock sized tyres. Does anyone have any suggestions on where I should shop or look for the tyres. If not would anyone know if I could maybe cheat a little and get a slightly different size?
     
  2. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

    Messages:
    10,931
    Likes Received:
    6,723
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Between a Rock and a Hard Place
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    Is this whats on it now..... 140/60R18 ?
     
    • Well said! Well said! x 1
  3. ZEUS

    ZEUS Member

    Messages:
    7
    Likes Received:
    4
    Trophy Points:
    13
    Joined:
    Apr 24, 2013
    Gender:
    Male
    Location:
    Sydney
    Yeah thats it. I've only checked online stock so I'll call a few stores around and hopefully there's more luck there.
     
  4. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

    Messages:
    10,931
    Likes Received:
    6,723
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Between a Rock and a Hard Place
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
  5. kiffsta

    kiffsta Senior Member

    Messages:
    9,066
    Likes Received:
    6,872
    Trophy Points:
    1,168
    Joined:
    Aug 7, 2010
    Gender:
    Male
    Location:
    Brisbane
    The 18 rear on the ZXR250 is somewhat of an oddity in size, I'm building a silver ZXR and I will be putting Dunlop GPR100's on there:thumb_ups: They arnt the cheapest Tyre, last time I bought one it was about $280 fitted
     

    Attached Files:

  6. mboddy

    mboddy Well-Known Member Premium Member Contributing Member

    Messages:
    411
    Likes Received:
    338
    Trophy Points:
    298
    Joined:
    Mar 18, 2012
    Gender:
    Male
    Location:
    Canberra
    My Bike:
    Yamaha 250cc 2 stroke
    Tyre sizes are different these days to when these bikes were new.
    Rather than looking for a tyre the same size as what came with the bike you should instead get the tyres that best fit the rim sizes.
    If that means that the tyre is narrower than original then that is not likely to matter as tyres are better these days.
    What size are your wheels?
     
  7. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

    Messages:
    10,931
    Likes Received:
    6,723
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Between a Rock and a Hard Place
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    I can understand that the quality of tyres to be far better than 20 years ago but would u like to elaborate on how sizes change? :confused:

    :D
     
  8. risky

    risky risky

    Messages:
    4,555
    Likes Received:
    1,177
    Trophy Points:
    923
    Joined:
    Nov 4, 2012
    Gender:
    Male
    Occupation:
    risky by name AND actions
    Location:
    newcastle,australia
    My Bike:
    honda ca77, megelli x2,fzr yamaha x 5 ,maxim,cb750.cb600 hornet,zxr250,marusho magnum electra.
    i have a very good battleax tyre 130/70/18 that came off an rgv.60 bucks plus freight if interested.
     
  9. mboddy

    mboddy Well-Known Member Premium Member Contributing Member

    Messages:
    411
    Likes Received:
    338
    Trophy Points:
    298
    Joined:
    Mar 18, 2012
    Gender:
    Male
    Location:
    Canberra
    My Bike:
    Yamaha 250cc 2 stroke
    Check out the following chart from the Bridgestone web site:

    [​IMG]

    It shows actual sizes of the tyres in the OD and TW columns.
    Different manufacturers will have different values for these even if they both say the tyre is the same 'size'.
    Also, even if the manufacturer is the same a different model tyre of the same 'size' may have different values.
    Also, the next version of the tyre may have different values.
    Best is to check the REC. RIM (recommended wheel rim width) and the MEAS. RIM (allowable range) to see what the best tyre is to fit.
    If the rim is smaller than recommended for the tyre then even though it is within range it will be pulled in further than is optimal and so the tyre profile will not be as good and the contact area may be smaller when leaned over.
    So, for example, my TZR250 came with a 2.15" front rim and a 100/80 tyre. But using the above chart it shows that these days I would be better off using the 90/80 even though I could fit the original size.
     
    • Like Like x 3

Share This Page