I'll have to check the heat on mine next I run them. But the heat is normal. Even feel your tail lights. I've been running mine for a more than a year at least and haven't had problems.
Mine did crack, although I believe it was from stones. Happened during a road trip to San Fran I think. Plus there's a chip missing, although this does cause me to think about it... The pass side has never had trouble.
TSX Club is the perfect forum for Acura TSX fans and Owners, where you can discuss concerns about reliability or how to upgrade your TSX with mods and accessories.