what would be best for a streetabl baja 31"or 33" it has 1600 in it

31 are large for a street baja too. My buggy only runs 235/75/15 AT's which are about 29"

you will lose your top end with the larger tires unless you get your trans geared for it. example...pulling a long hill in fourth gear with larger tires will bog a 1600 down and you will be doing a lot of downshifting.

big tires look better/meaner, but hamper performance.

good luck,
DW
Menifee

If you want huge tires you have to have a big engine. I had a baja with a 1914cc in it and it had no problem spinning 30" wheels. 13x15 paddles were fun too.