Welcome and congratz on your 2003 America. In what part of the world do you live?

Sounds like you have a custom paint job.
Here is a link on the different models of Americas. http://www.triumphtwinpower.com/triumphbonnevilleamericaspecs.php

As far as tires if you are riding a British Bike you might as well run it on British Rubber. Avon Tyres are the way to go.

Their website recommends

Front Roadrider 100/90-18 56V at 32 psi
Rear Cobra 170/80B15 84H 36 psi

I have these on my bike and love them.

http://avonmotorcycle.com/

Once again welcome to the clan. Hope to see some pictures of that bike soon.

Last edited by BillyIndiana; 02/28/2017 7:04 PM.
Road Rash Heals. Freckles Grow Back. Ride