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Tire size question?

  1. #1
    Don't bother me! R7's Avatar
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    Tire size question?

    I ordered new hoops for my Ape and must have had a brain fart when placing the order. I ended up with a 120/60 front, when the bike calls for a 120/70 front. By the specs, the inflated circumference is about 1" difference between the 2.

    First question, what's the handling difference and how will it change it?

    Second question, (probably best to call the dealer on this one) it's an RSV4 with APRC and I know things get a little wanky just with simple tire changes...After I reset the APRC system, will it still work properly with a smaller diameter tire?

    edit.. I did order a 120/70, just not sure if it'll make it here by Friday or not..which meens I have to put the 120/60 on for the weekend

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    Last edited by R7; 10-14-14 at 06:36 PM.
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  2. #2
    Angry Gumball RandyO's Avatar
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    Re: Tire size question?

    Quote Originally Posted by R7 View Post
    . By the specs, the inflated circumference is about 1" difference between the 2.
    I think you mean about 1" difference in diameter

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  3. #3
    Day late, dollar short carsick's Avatar
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    Re: Tire size question?

    24 mm.

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  4. #4

    Re: Tire size question?

    Quote Originally Posted by RandyO View Post
    I think you mean about 1" difference in diameter
    huh...dang...didn't think it would be a full inch taller until I did the math...~0.94"

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  5. #5
    Super Moderator OreoGaborio's Avatar
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    Re: Tire size question?

    CAR tire math doesn't work with motorcycle tires

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    60% squid duganc1717's Avatar
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    Re: Tire size question?

    I put a 120/60 on a GSXR-750 years ago and tipped into corners much too aggressive for my tastes.

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  7. #7
    Is this thing on? Mr. Kurtz's Avatar
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    Re: Tire size question?

    Quote Originally Posted by OreoGaborio View Post
    CAR tire math doesn't work with motorcycle tires
    ^what he said.

    Car tire math doesn't even really work all that well with car tires.

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  8. #8
    TRACK RAT!!!!! Pigman's Avatar
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    Re: Tire size question?

    Quote Originally Posted by duganc1717 View Post
    I put a 120/60 on a GSXR-750 years ago and tipped into corners much too aggressive for my tastes.
    Prob went from a Brickstone to a PilotPWR.....

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  9. #9
    Soul Rider Paul_E_D's Avatar
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    Re: Tire size question?

    Must be Michelin as I think tey are the only brand still making that size?

    Anyway, yea, the bike will turn in really well! Might be harsh over bumps, but not likely a problem where we are going. I haven't run one since my EX 500 days...

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  10. #10
    Don't bother me! R7's Avatar
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    Wirelessly posted

    Quote Originally Posted by Paul_E_D
    Must be Michelin as I think tey are the only brand still making that size?

    Anyway, yea, the bike will turn in really well! Might be harsh over bumps, but not likely a problem where we are going. I haven't run one since my EX 500 days...
    Its a Pirelli Corsa. So the quicker turn in may not be a bad thing seeing the bike is a bit porky?
    So next question is how the APRC reacts, I'll give seacoast a call on that.
    Thanks for the reply

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  11. #11
    Angry Gumball RandyO's Avatar
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    Re: Tire size question?

    I have ran both 120/60s and 120/70s on my SV,

    the 120/60s are quicker turn in, twitchy compared to the 120/70, more midcorner corrections cause of the quicker turn in, also less sidewall to protect wheels if you get into any rough stuff

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  12. #12

    Re: Tire size question?

    Quote Originally Posted by OreoGaborio View Post
    CAR tire math doesn't work with motorcycle tires
    Quote Originally Posted by Mr. Kurtz View Post
    ^what he said.

    Car tire math doesn't even really work all that well with car tires.
    oh mannnnn

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  13. #13
    First name on the shit list.... SVRACER01's Avatar
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    Re: Tire size question?

    Quote Originally Posted by R7 View Post
    Wirelessly posted



    Its a Pirelli Corsa. So the quicker turn in may not be a bad thing seeing the bike is a bit porky?
    So next question is how the APRC reacts, I'll give seacoast a call on that.
    Thanks for the reply
    as said by others, quicker turn in. when i was in AZ i had put a 120/60 on the front and a 150 on the rear of my SV because the tracks there are really tight. made a huge difference. i ran that set up for a couple races at NHMS before going back to the 70-160 combo

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  14. #14

    Re: Tire size question?

    You won't notice it at your speed!


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