The less powerful the vehicle the more of an effect lighter wheels will have on it.My 87 dakota with a 3.9 accelerated/stopped/turned better with factory jeep alloy wheels than it did with the boat ancher steel wheels that were on it, even though the tires on the steel wheels were P rated 205/75/15's and the tires on the jeep wheels are LT BFG All terrains in 215/75/15.Normally LT tires are heavier than P rated tires coupled with the increase in height should have have made handling worse, but just loosing so much weight with the aluminum wheels tipped the scales back.In terms of rotational inertia a difference of 1 lb is huge, by comparison you would be hard pressed to notice a difference of 25 lbs in sprung weight.
