2011Montana valve stems blowing.

[lesmadding]

I’m currently on a trip. Had two valve stem failures today. So here is the scenario. 4 brand new Sailuns 16 ply. 110 psi cold. Factory aluminum wheels with new rubber valve stems. The failures occurred while on very bumpy roads. With my TPMS the tire pressures were about 118 psi and around 95 degrees temp, I’m thinking the pressures spiked while hitting the bumps from the weight of the trailer beyond the valve stem rating? Can metal valve stems be used with aluminum wheels instead of rubber? Can I buy higher rated rubber valve stems? The tires say 110 psi cold. Is this to high? What is the psi rating of the aluminum wheels? Maybe 110 and higher is to much? Any help would be appreciated. I hate tire problems and thot I wouldn’t have any…