I am not smart enough to know the answer to this question. My son is being accused of touching a bike yes touching on the seat a bike on a bike rack which the school is claiming made both tires pop. The only way i see this as possible is if the bike owner aired the tires up in the morning around 7:30 am with the out side temp at 67 degrees and by 3:45 the temp outside was 101 degrees . Is it possible that the air expanded enough from say 40psi at 67 degrees at 7:30 am to cause both tire to pop when a small amount of weight was applied . How much would the air in a tire expand with a 33 degree rise in temp at a starting point of 40psi at 67 degrees. Sorry so long winded . Thanks for any help .