Restoring Nismo Seats???
 

My seats are starting to show wear. Like some wrinkles. And is there any way to straighten out the wrinkles?! HELP!!

how about getting those leather covers or something? check the interior/exterior forums. it's a diy product and looks pretty much like oem.

I'd assume you could iron or even safer, blow dry them to shrink the fabric

Depending on your mood you can throw them in the trash and pick up some touring seats and have some comfort.

My guess would be steam clean them

i think you are SOL on this one. they are just worn out OP.

maybe something by the 303 aerospace guys could help.
http://www.303products.com/products/