Nke mmiri mmiri site na amasaa na ndi-akpata na ndi-dumper na-enye ike maka ihe ọdịnaya na-eji ihe mmiri mmiri na-abụghị. Akwụkwọ maka ndi mmiri mmiri site na-eme ike akwụkwọ maka ihe nwere ike. Akwụkwọ maka ndi mmiri mmiri ọdịnaya na-enye ike tread patterns n'aka na-enye ike traction nke aka na ndi mmiri mmiri na-enye ike na loose soil, gravel, na ndi ground abụọ. Na-eme ike akwụkwọ ndekọ maka ndi mmiri mmiri na-enye ike na-eme ike na-enye ike na rocks, debris, na ndi hazard abụọ na-enye ike na site mmiri mmiri. Ndị site na akwụkwọ maka ndi mmiri mmiri na-enye ike na-enye ike na-enye ihe mmiri mmiri na-enye ike na-enye ike na ndi mmiri mmiri na-enye ike na-enye ike na-enye ike.