tyre weight and resistance

baccodaddy
baccodaddy Posts: 128
edited August 2007 in MTB general
have nevegal 2.1 at the moment so two questions

1.what weight are these and are they rated?
2.for forthcoming ruthin marathon should i stick lighter tyres on ,ive heard it got the most climbs out of all the meridas and would lighter tyres comprimise puncture resistant ,not pinch flats though as i weigh nothing and couldnt hit something that hard if i tried?