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Thread: 18 inches or 20 inch rear tires

  1. #1
    Join Date
    Feb 2007
    Location
    southeastern Mass
    Posts
    1,575

    18 inches or 20 inch rear tires

    im wondering what you guys would reccamend how much would i lose top end with 18's also how fast would i accelerate pros and cons of the two please
    '07 250ex
    20 inch razr tires
    ITP C-series sport wheel

    '03 kawasaki bayou 250- Cleaned up
    '04 yamaha breeze-sisters

  2. #2
    Join Date
    Mar 2007
    Posts
    109
    i tried 18 and 20 inch tires. 20 are definately the way to go. you have more meat to soak up bumpy terrain. also, the 18's really made my quad feel lower, and there was not a big difference in acceleration - at least not enough to make up for the top end you lose from dropping down from stock 22's.

  3. #3
    Join Date
    May 2007
    Location
    wellington, ohio
    Posts
    541
    if you put 18's on it, your quad will go 40-45 mph. Run 20's. 18's aren't worth the acceleration when you lose so much top end.

  4. #4
    Join Date
    Feb 2007
    Location
    southeastern Mass
    Posts
    1,575
    then what does it do stock and what does it do with 20s lol
    '07 250ex
    20 inch razr tires
    ITP C-series sport wheel

    '03 kawasaki bayou 250- Cleaned up
    '04 yamaha breeze-sisters

  5. #5
    Join Date
    Mar 2007
    Posts
    109
    20" = 50MPH

    22" = 55MPH

    GIVE OR TAKE A MILE OR TWO.

    SERIOUSLY, THE 18'S REALLY DIDN'T SEEM TO ACCELERATE MORE THAN THE 20'S, BUT I COULD TELL A DIFFERENCE IN TOP SPEED. AND IT WAS MORE DIFFICULT TO KEEP THE FRONT WHEELS ON THE GROUND WHEN ACCELERATING HARD. PARTLY DUE TO THE ACCELERATION, AND LOWER REAR CHANGING THE GEOMETRY.

  6. #6
    Join Date
    Feb 2007
    Location
    southeastern Mass
    Posts
    1,575
    does the bike wheelie better with 20 inch razrs then stock?
    '07 250ex
    20 inch razr tires
    ITP C-series sport wheel

    '03 kawasaki bayou 250- Cleaned up
    '04 yamaha breeze-sisters

  7. #7
    Join Date
    May 2007
    Location
    wellington, ohio
    Posts
    541
    yeah a little bit, but you will lose a bit top end. it isn't bad though.

  8. #8
    Join Date
    Mar 2007
    Posts
    109
    I DON'T KNOW IF IT'S NECESSARILY BETTER, JUST DIFFERENT. I CAN WHEELIE FOR AS LONG AS I HAVE ROOM WITH ANY OF THE TIRES I'VE TRIED ON THE 250EX. HONESTLY, THE STOCK TIRES WERE GOOD FOR WHEELIES, AND THAT WAS ABOUT ALL THEY WERE GOOD FOR.

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