Tire weight

SB8 would be my choice out of those for sure. they hold up super well, especially if you run them primarily on dirt. they do have XC thin side walls but the hold up fine even when pumped up real high. i got one flat using one riding street which isnt surprising since even super thick tires get flats riding over grimey sh!t. they really are super light too..

also the new intense micro knobby should be on your list. they were for sale on jensonusa i think.

Talk about super thin side walls. I just bought my second rear K-rad the other day because I had a blow out due to a freyed sidewall. I bought the first one I think last July so roughly 10 months later I needed another. I did end up buying another k-rad just because of lower price and also looking at my LBS there was really only one other choice at the time which was a DMR moto, which to me also has a pretty thin side wall. I usually like to try different tires just for the experience but The K-rad works pretty good.
And yes, while holding both tires in my hand, the k-rad seemed a little lighter. But that could have been my inaccurate judgment.

I thought the schwalbe tabletop was the lightest?

Cru Jones said:

I thought the schwalbe tabletop was the lightest?

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Its like 100g more then the sb8 I think

the sb8 work great. i use them for everything the only time i have had issues with the thin sidewalls is when hanging up on coping at the skate park other then that it is the best tire i have ever rode. the intense micro knobbys are sick but it is to wide in my opinion but there is talk of a 2.0 coming i cant wait

so are all the 24" micro nobbys in ridiculously thin widths?

Defenestrated said:

so are all the 24" micro nobbys in ridiculously thin widths?

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pretty much. intense micro knobby, irc siren, dirtmonster are all kinda thin.

Schwalbe TableTop 26"x2.25 = 560g (self weighed)
Schwalbe Racing Ralph 26"x2.1 = 439g (self weighed) new version, 467g old version (self weighed)