well... broke my first belt :(

pullin up a decent hill and BAM!!!! herd of all the horror stories, and didnt even lift the hood. didnt want to. my neibour was the one to check. my 111 belt pulled apart, it didnt explode but rather it just turned into a long usless piece of rubber. i put 450-500 miles on this 111 and it was on it when i bought it so could have been over 1k for all i know. when it let go it riped apart my "home make clutch vent" and tore up my plastic. there is a sh*t load of energy there lol. turned out that was the only day i didnt bring a spare belt due to my belt guard cracking and comming very close to my clutches.... so what belt should i go with? i would go with the 115 but not a fan of how it wears the clutch sheaves. might just go with the 111 again served me well...ish lol
oh yeah the clutch is still attached to the motor thought id let ya know :face-icon-small-hap

well this is my first year on it and when i bought it the seller said it had 6-7 hundred on the crank (06) the sled has 2500 mi (05). never had the clutch off so no idea on the run out... but i swear it feels like less vibs now :face-icon-small-dis but who knows... i wasnt full throtle maby half when it happened just came up a hill and let of to slow down for the 2nd step and when i got back in it, it went bang.checked the max rpm and it didnt over rev when it happened max for the day was 7850 witch in my avg peak. also when the belt went it was warm and the clutches were mild so i think the belt was just old.