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  1. #1
    RC Racer
    Join Date
    Sep 2012
    Posts
    235

    Difference n 40 series vs reg 3.8 tires' s

    What is the difference in 40 series tires vs reg 3.8 tires? On Proline's site I see the same tire listed as both. Measurements seem the same.

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  2. #2
    RC Racer
    Join Date
    May 2013
    Location
    Attica,IN
    Posts
    189
    I think the 40 series have a thicker/wider bead. To match 40 series wheels. If i remember correctly
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  3. #3
    RC Qualifier
    Join Date
    Oct 2008
    Location
    Soldotna, Alaska
    Posts
    730
    40 series are generally quite a bit bigger

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  4. #4
    RC Racer
    Join Date
    Apr 2012
    Posts
    100
    they are the same , they just started calling them 3.8 because of the traxxas style bead

  5. #5
    RC Competitor
    Join Date
    Sep 2012
    Location
    coatesville pa
    Posts
    63
    Yup thats right

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