[bradleyhb]

Here’s my American perspective:

Centre look and sounds like “cent-ruh” rather than the rolled out sounding of err sound to make “center”. Then again, how you say it is a bit different, too.

[Symbiote]

There are two "US" pronunciations on Wiktionary.

The first is much closer to the British pronunciation, which (I think) is much more deserving of the spelling "centre" than the second "cener".

https://en.wiktionary.org/wiki/center#Pronunciation