VS 
as the tittle suggests, ever wanna know what's the weight of your rubber? check
this out.
i'm kinda surprised actually, as I always thought that maxxis 310 is the champ at weights, but I guess now, we have to really take a look at shwalbe furious fred. A few grams lighter..wonder how it'll perform compared to the 310? Actually have a friend who has a friend who rides one FFred. Wonder how he does going head to head with a 310?
Personally, I've tried the 310 and it's really really fast, but with the price tag one 310 equivalent to of almost a pair of foldable xmark, I think I'll just pump a little more air into my xmark and enjoy its temporary speed boost on the road.
In any case, there's a lot of other models to check out in the
link given... if any of you want to know the actual weight of your prefered rubber, go check it out.