Yes the 235's will fit the OE wheels.

With that said, what tire pressure are you running and what is the max pressure of your tires? The tire load rating is usually at max pressure, so if you haven't tried increasing the tire pressure to accomodate additional load, you may want to give that a try 1st.

hupptoy


99 4Runner SR5 3.4 Auto 4x4, 32" LTX A/T, 154K
93 Toy x-cab 22RE 5-spd 4x4, 31" LTX A/T, 150K