Upsizing tires for Gen2 rims

[Go-ran]

Hi all, I want to upsize the tires on the Gen2 rims to get a little bit more meat and Lower the car so i dont run into huge clearance issues.

I got gen2 rims for my gen 1 and these tire sizes just arent popular as everything is 19-21 these days for this width.

thanks for your time