I'm thinking of buying some 20 inch aftermarket wheels to my 2014. Will mounting those wheels and associated tires throw off my tire pressure sensors from the tires to the front dash?

 

They should be fine if you move your tpm sensor over from your old wheels and put the factory 33psi in the tires. The sensor doesn't know what wheels they are on, they just care how much pressure is pushing on them.

If you have troubles the dealer can rewrite the info to your computer or you can buy a tool to do it for around $200 .