As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT CREW RECEIVED EICAS MESSAGE TIRE PRESS DISPLAYED. GEAR SYNOPTIC SHOWED NOSE TIRE PRESS AMBER COLOR. LEFT 211 AND RIGHT 185. EMERGENCY DECLARED. LANDING UNEVENTFUL. REMOVED AND REPLACED RIGHT NOSE TIRE IAW AMM 32-45-02. TIRE CROSS CHECKED WITH CALIBRATED TIRE GAUGE FOUND PRESSURE TO MATCH EICAS PRESSURE INDICATION. SYSTEM CHECKS NORMAL.