I have a 2010 G37S Sedan and I'm fixing to buy a set 19" Rays with TPMS's included from the old G35 coupe. Would I have any problems using those sensors with my current car?

 

most likely, yes. if your car was built after March 2010, then those TMPS will not work. best thing to do is swap your TPMS onto the new wheels.

 

Thanks. It wouldn't hurt without the TPMS right? I'm assuming it's just the light that will be on. Also, if I put my stocks back on with them, the light would automatically go back off?

 

correct...without TPMS, the light will stay on. if you swap your stocks on, the light should turn off after a few miles of driving. (30 min to be safe). if it doesn't, then you might need to get them reprogrammed. a tire shop like America's Tire/Discount Tire can do that. The dealer is a choice also, obviously, but they may charge you.