I know I would not like the harsh ride of 20" rims. I also think that the 18" and 20" rims usually derate the axle and towing capacities. You can check the towing guide and make sure - it might have changed for this year.
Personally, I like the extra tall rubber found on the 16" and 17" rims. Measure the rubber from top of the tire to steel rim. On some, there will be 4" or 5" of cushion. The 20" rims, barely enough to smooth out the bumps!
Are you very sure that you will not want a fifth wheel in the next 10 years? The truck will easily last 10 - 15 years, before you want to get another one. However the 2500 series normally can not tow a fifth wheel due to the high pin weight, and the low cargo rating of a 2500 truck.
Good luck on your purchase!
Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a
Porsche or Country Coach!
If there's a WILL, I want to be in it!
I havn't been everywhere, but it's on my list.
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