My Warlock came with 20" black alloy rims, I accepted this because I already had a new'ish set of 20" tires from my previous ride.
As part of the purchase agreement, the dealership swapped the crappy OEM tires with the nearly new Michelin Defenders from my Tundra.
At the end of the season, when I switch to 17" Winter wheels, I notice a slight improvement in the ride quality and even though it's only slight, you have to consider the difference in the tires I'm using.
The Summer tires are 20" OEM-sized Michelin Defenders, a pretty soft'ish and comfortable ride.
The Winter tires are E-rated BFG All Terrain KO2s 245/75/17 and usually pressured to about 42/40 PSI F/R.
I'm not sure what anyone is talking about when they say KO2s are quiet and comfy on the road. Maybe on deep snow, they are but, not so much on dry pavement. YMMV.
If I notice an improved ride comfort with a switch between my summer & winter wheels, the perceived improvement would likely be more noticeable with non-beefy road tires.
I should qualify my perceived ride comfort comment. The BFGs are always louder and a somewhat rough ride in comparison to the Defenders but for bumps, potholes and debris on the road, the BFGs always cushion better. Must be related the amount of sidewall.
In my past life, I used to enjoy offroad adventures and more sidewall was always better, regardless of the terrain but especially for any sort of rock crawling.
Then again, I see people offroading with ultra-low-profile and massively wide tires and they wonder why other trucks are figuratively running circles around them.
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