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how wide of a tire can i put on my kat?

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  • how wide of a tire can i put on my kat?

    i have a stock 2005 750 kat, with a 150 on the back gonna need to replace it soon but want to go wider, how wide can i go with out interfering anything? thanx for your input

  • #2
    Probably 160 on a stock wheel. .....anything along the lines of a 180 will require mods.
    sigpicLife throws you curves......enjoy the ones you get when riding.
    ------------------------------------------
    89 GSX750F(sold....sob)
    96 YZF 1000R

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    • #3
      160, nothing wider.
      Watching Obama run this country is like watching a train crash in slow motion.

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      • #4
        Originally posted by frobotz View Post
        160, nothing wider.
        Negative, certain 170's are made for the 4.5" rim. Although I do recommend 160.


        (Signature has been deleted due to upsetting people)
        1992- project katfighter
        2005- GSXR750
        2001- TL1000R
        http://katriders.com/vb/showthread.php?t=111130
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        • #5
          I have a 180 on my 2000 with no modification.

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          • #6
            Originally posted by Blackedout View Post
            I have a 180 on my 2000 with no modification.
            Trust me, that doesn't mean you should. Just because you can shoe horn a big ass tire on a 4.5" rim doesn't mean you should. I can wear 30" pants, but 32" pants fit a lot better.

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            • #7
              Originally posted by arsenic View Post
              Trust me, that doesn't mean you should. Just because you can shoe horn a big ass tire on a 4.5" rim doesn't mean you should. I can wear 30" pants, but 32" pants fit a lot better.
              Must read for carb tuners......http://www.factorypro.com/tech/tech_...m_engines.html

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              • #8
                Originally posted by arsenic View Post
                Trust me, that doesn't mean you should. Just because you can shoe horn a big ass tire on a 4.5" rim doesn't mean you should. I can wear 30" pants, but 32" pants fit a lot better.
                is a 180 a bad idea if so why? does the bike not handle right with the wider tire?

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                • #9
                  You have a 4.5" rim. A four and a half inch rim. No 180 tire on the planet is made for a 4.5" rim. In general, putting a tire that's too wide on a rim that's too narrow accomplish the same effect as this:
                  Last edited by arsenic; 02-18-2013, 12:03 AM.

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                  • #10
                    With diagram

                    Must read for carb tuners......http://www.factorypro.com/tech/tech_...m_engines.html

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                    • #11
                      ok thanx guys btw this got a little disturbing with the pics lol all in good fun tho

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                      • #12
                        Do a search on wide tire. You'll find plenty. Basically though, a 170 is the widest tire you can safely put on a 4.5" rim and even then it depends on the tire. Put too wide a tire on a rim and you'll distort the tread portion of the tire beyond where it's supposed to go. In addition to creating a tire that has too little tread touching the ground when you're going straight, you may even create a situation where you have less tire in contact with the ground when you're turning than you would have with a narrower tire. (That's bad.)
                        Wherever you go... There you are!

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                        • #13
                          I just stuck a 170/60r17 tire on a post rim (4.5") that i got off ebay and swapped it on my pre kat. took alittle work but the only real mods where stretching the swing arm, making a custom spacer, locating a post hub carrier and then modifying the rear brake arm! but it fits like a glove now!!!

                          You might want to look at the brake arm, 170 barely rubbed, 160 clears. I have a thread in here about post rim clearification with my end results/pics.
                          1990 TURBO Kat 600 G15 hidden turbo 12psi
                          fender eliminator w/led integrated tail light
                          55w dual HID bixenon projector w/halo, blue lighting
                          R6 shock, Custom billet mirrors, oil temp/boost gauges
                          Post rim swap 170/120 tires, EBC pads/rotors, G&J lines

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                          • #14
                            I have a 2005 750 Kat fitted with a 170/60 tyre. It looks better, but more importantly for my needs, is more stable and can carry more weight easily - the trade off is it is understandably slightly slower to turn in. Just check that your brand of 170/60 tyre is designed for the 4.5" rim - many are (including Michelin), some aren't. (Funnily enough, most 150/70 tyres are actually designed for a 4' rim.) You really don't want a 180. And my personal preference (contrary to many) is to avoid a 160 because it has a significantly lower profile / smaller diameter. (Even the 170/60 is slightly smaller in diameter than the stock 150/70.) Almost the last thing you need for handling is to lower the rear. Plus, it will throw out your speedo more and make using the centre stand more difficult.

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                            • #15
                              the rear tire change only affects the post kats and not the pre's. Pre's use a speedo cable driven off the center of the front rim. Tire DIA changes make no affect on the pre's.

                              Supposidly the 170/60 tire has less contact patch than a 150/70 or 160 tire, but it looks better.

                              lower profile tire will increase road noise/roughness and lower the rear alittle. But that can be fixed by raising the rear to restore handling etc.
                              1990 TURBO Kat 600 G15 hidden turbo 12psi
                              fender eliminator w/led integrated tail light
                              55w dual HID bixenon projector w/halo, blue lighting
                              R6 shock, Custom billet mirrors, oil temp/boost gauges
                              Post rim swap 170/120 tires, EBC pads/rotors, G&J lines

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