lol, home made...and a story behind it, here goes. Over pumping up a fatty to 25psi needs hot soapy water sprayed on the beads of the tyres and rims. 10pm one evening...BOOM !!!! Sounded like the Taliban were on my roof !!! Forgot to drop the pressures to below 20psi, as 20psi is maxed out. The tyre ripped about 10in across the sidewall looking like a frazzled poppadum, tube split even longer, tyre blew off the wheel, fat bike across the bathroom floor with washing and towels on the radiator blown everywhere?

Just before, my niece and nephew was playing in there, they're 6 and 10. They would have been blown up, and the noise immense !!! 14psi is like one bar, which is enough to pump radiator water around the house...20psi is nasty lol. I forgot after banging 25psi, grabbed some munchies, had a shower and boom! Learnt my lesson the hard way, the three fattys got the most expensive home made guards now as the tyre was £95 with a £15 tube....very expensive mistake.

 hahahahaahhahhhahh Holy moly I have never had a tire rip on me like that! Oh man, Im super happy to here your niece and nephew didn't get hurt! ahhahaha Great story brother just awesome! Expensive but fun lesson learnt!

 @nikoniko: Oh yes....expensive lesson bro lol.