Just took 4 regular van tires (235.75R16) from 9psi to 55psi and no problem whatsoever. But those are small tires and its not hot out. Still not completely satisfied. Will know for sure on the next trip.
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Dave and Yoshi [Ki6LBB] https://www.adventureduo.com
2003 Baja Tan SMB EB50 V10 (SOLD in 2008)
2003 Baja Tan SMB EB DYO 7.3 Diesel