Largest Width for 5.5" rim

I recently bought a 1987 Suzuki Sammy and the tires are dry rotted. It has the factory 15"x5.5" wheels on it and I wanted to get the largest width tire that will fit this rim (safely).

Thanks!

Biggest size that we have test fit for your vehicle is a 205/75-15 which is 27.1" inches.

You may want to check to see what other Samurai owners have run as well.