To easily mount an antislipping net in a grounding condition without jacking a tire up and suppress the floating of the antislipping net.

This net has (n) pieces of divided net bodies and a fixing rope 5 for securing the respective divided net bodies, one of fusiform opening parts 21 formed between the end parts of the divided net bodies is enlarged, and the maximum length Vk in the peripheral direction o6f the opening parts satisfies the next equation (L0×NL/TL)×0.075≤Vk≤(L0×NL/TL)×0.125, provided that ΣJLi={(L0-TL)×NL}/TL, here L0: the overall rope-extended length when the fixing rope is extended in a straight line, and loading 20 kg loads at both the ends, TL: the sum of the rope extended length between P and Q when a 20 kg load is loaded between the end supporting points Pi and Qi out of the extended fixing rope, NL: the sum of the extended length of divided bodies between the supporting points Pi and Qi of the divided net bodies when the rope is extended in a plane, and JLi: the length between the supporting points Pi and Qi+1.