The tread pattern is going to affect ride and road noise as well. In my experience, when going to a tire that is a little "more" the difference is often only barely noticeable.
I went from the OEM Goodyear Fortella's to BFG Rugged Terrain T/A, the tread pattern was definitely one that should have been a rougher and nosier ride on the highway. Honestly, I have to concentrate to feel/hear a difference from the OEM.
I'd look up the actual weight (in lbs) of both the OEM and your intended tire, unsprung weight (tires/wheels/brakes/suspensions pieces) has a much higher effect on ride and handling. But a few pounds isn't going to make much of a noticeable difference.
Those differences in suspension performance will also be exaggerated by a weak suspension, so if you have old shocks and torn up bushings (sway bar bushing are known to wear out on the Commander) you should replace those with the upgrades.
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