skwerl said:
hang on though. technology advances. these aren't made of the same stuff that Dunlop aimed to replace, ie a solid lump of rubber. these are micro-cell blah-di-blah.
postage costs aside the price is reasonable, as is the weight (cf Schwalde Ultremo tyre plus tube ie about the lightest combo on the market = ca 250g). I'd like to know if they're any good or complete cack. I'm erring towards cack as logic suggests that if they're as good as their website says then we'd all be using them
When you compress a cellular foam tyre, all the air stays put in the cells between the rim and the road. It you compress the tyre to half the thickness, the pressure has doubled. In contrast, the pressure in a normal pneumatic tyre is more or less unaffected by the compression from hitting a bump.
The cellular tyre has to have a reasonably high initial pressure in its cells so that it will maintain its shape and give reasonable handling, with the end result that is has nothing like a normal capacity to absorb road shocks. You get a very harsh ride which as well as being uncomfortable leads to mechanical failures in the bike.
If you are completely incapable of mending a puncture, and only ride short distances on smooth roads, there's some point, but not for the rest of us.
Sheldon said:
Airless tires have been obsolete for over a century, but crackpot "inventors" keep trying to bring them back.
There's also the possibly apocryphal story about the chap riding down the hill with his wheels not revolving (rainy day, tyres slipping round rim).