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Thread: rain grooves

  1. #1
    Senior Member SportsterDoc's Avatar
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    rain grooves

    Pleasant ride today.
    Mid forties F.
    Two hardware stores and a library
    Only about 20 miles, but nice to have the wind in my face.

    Got on the beltway to try out the rain grooves in the concrete, parallel to direction of travel.
    Disconcerting, but manageable. Reminds me of ribbed front tires common in sixties and seventies.

    Tires are factory Bridgestone Trail Wing, 21 PSI front and 24 PSI rear.
    Deal prepped them about 30 each and that was way too hard for Rocky Gap Road.
    I'd go lower for dirt, but typical ride is about 22 miles on asphalt to get to dirt.

    Anyone with rain groove experience have suggestions on tire pressure?

    Changing the tires is not of interest, as I expect to trade this bike for a street bike late fall...after I run out of local trails to explore.

  2. #2
    Senior Member Beeline's Avatar
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    On rain grooves it's the stock front tire that's the fault. High or low pressure doesn't make much difference. I replaced the front OEM tire with a Shinko 241 and problem went away as well as increased corner traction on gravel logging roads.

  3. #3
    Senior Member SportsterDoc's Avatar
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    Good to know about the tire pressure, as that will save me experimenting.
    The Shinko 241 is not a staggered block as is the Bridgestone Trail Way.

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  5. #4
    Senior Member RockyTFS's Avatar
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    Yup...the 241 would not do this. Probably around 16-18 psi front/rear on pavement would work well unless maximum mileage is key...then up to 20/24 front/rear......(One up). Most of us hate the trail wing.....uh...Death Wing!
    Smitty Blackstone and Beeline like this.
    Rocky
    2018 TW200
    2014 BMW R1200GS LC

  6. #5
    Senior Member socalnative's Avatar
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    If I'm not being lazy and I plan to ride more than 20 minutes on the street I'll start with 25- 28f and 28-30rear. Then lower to 18f/15r. I used to be way more picky about tire pressures. Freeway grooves are not much fun with any knobby like tire I've used
    I also have had good results with the 241 on the street.
    Smitty Blackstone and Beeline like this.

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