It all depends on the offset of your wheels. You can fit up to 33"x12.5" r17 on stock 17" wheels with zero rubbing and no modification required, so 295/70/17 should be no problem. But if your rims have a negative offset, that's when you will get rubbing and need the PW mod. If your wheels have a more positive offset similar to stock, you won't need a leveling kit or pw mod for anything up to 33" x 12.50" tires. Mine never rub even when I bottom out the shocks with the wheels at full cut. 33x12.50r17 fits like they were meant for the truck on the stock offroad wheels.