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studable tires: you can always replace studs ! D4 V0 ]' s6 y' A6 p% b1 S8 N1 \ " |* Q- U0 w4 N0 m$ z. v, Z# k9 Jstuded tires: studs comes on tire, once they gone, they are done( y$ `. [ Y) _9 l- ?8 @- l# y) v
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studless tires: can not put studs on
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there are lots of differnt manufuactures making studable tires, you can replace studs after they worn out
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not bad, but no the cheapest. yes, even cheapest snow tire will provide better traction than most expensive all season tires( C0 K( S4 e9 u) U* H: P7 C
1 l+ k& p2 e" U) i0 f, ^studs are made by steel rods