Reply to "NEW Mangusta Wheel by Group 4 Wheels"

Your tire guy is worried about magnesium wheels being porous, so he tries to spec tubes. IMHO, if your wheels are so porous they won't hold air with tubeless tires, catastrophic wheel failure from cracking is not far behind whether there are tubes inside or not.
Magnesium castings, also known as 'compressed corrosion' can be TIG-weld-repaired if not too porous, then stress-relieved in your wife's kitchen. The magic temp is only 275F degrees for 3 hours followed by VERY slow overnight cooling.
WE wrap the hot wheels in a blanket, put them back in the hot oven, then simply turn it off until morning. Have any needed welding done BEFORE stress-relieving, as weld heat will contribute to internal stresses in the wheels. 275F will cause the protective aluminum paint on all Campys to turn tan, requiring repainting as a last step. I recommend doing this every 15-20 years on ALL magnesium wheels, which have been known to spontaneously crack while stored without tires on a shelf in your basement...