Help a newbie with tire sizing!!

Current Setup:

Rim size – 19 x 7.5inches

Offset – 35mm

Tires size – 235/55R19

New Setup:

Rim size – 20 x 7.5inches

Offset – 35mm

Tire size – ???????

What tire size will fill up my

Both have same bolt pattern (5×114.3mm), center bore (60.1mm) and offset (35mm).

Thank y’all!!!!