i know this isnt what you asked for but... now adays i just run the cheapest special that i can find on bonktown.com they usually have Hutchinson equinox for 10 dollars a pop. lasted as long as the rando i had on the back and is much much cheaper. the only downfall (if you view it that way) is that they are 23 wide instead of the 28 of the randos. you are going to destroy tires riding fixed and skidding your brains out ( i do and i run 46x17). no point in spending 30 dollars on a rando that is going to get thrashed imo. In anycase when i did have my rando in the back i loved it. Nice ride and pretty durable. Never had any blowouts in the month i had it.