When it comes to tow vehicles for a trailer.. Bigger is better,,, I'd rather the two vehicle be bigger than needed than do a Benny Hill sketch.
But you might wish to point this out to your wife.. Three advantages to a class a. one I hope you never need.
1: A towed car gets great gas millage when you run from the campground to the store, church, local area attractions, and leave the class A behind.
1b: A Big pickup will get about the same MPG towing as the class A does, but not nearly as good as that car when you run to the above.
2: As I travel on I feel, I must sit on the fixture, attached to plumbing,, But it's raining out and there's no rest area for hext 30 miles and I do not think I can hold out.
in a Class A you find a wide spot on the shoulder, hit the 4-ways and the aforementioned plumbing fixture is INDOORS so you don't even get wet.. I do not recommend even the co-pilot move about when in motion but Well, there is always shoulder within the next mile.
Pulling a trailer.l You gonna get wet at the minimum.
And finally.. The one I hope you never need to consider.
Now this happened two different ways to me.
Some years ago my car (towed) died, so for a period we lived with the Class A as our "Grocery Getter".. In truth this has advantages because we timed everythign to minimize driving.. So on Wed, we would head to the stores, buy groceries, bring 'em out and put 'em away still in the store parking lot,, Ice cream did NOT melt on the way "home".. Milk keeps better if swiftly put away.. And shopping Aldi's wife did nto have to bag, Just push the cart to the door, I handed the stuff up and she put it away, I returned the cart and got her quarter back.
But,, Well, I do like having a car Having that "Spare Vehicle" though, was vital.
Then more recently the Class A blew an engine, soon (I hope) to be fixed (Wanted to do it today) now I got lucky, Good cell service when it went BOOM.. but what if I'd been in the middle of "no signal city".... Well, having that spare vehicle (The towed car in this case) would have made it possible to run and get HELP.
Finally... backing into a back in site..... I recall one day a 5th wheel owner (new) beside me was talking to her hubby by phone as I backed into my site.. Now I will tell you that this was the easiest site to back into in the entire RV park,, but hey.. Some days you just get lucky.
She's saying "You should have seen this guy beside us back in. WOW is he good.
(I had pulled onto a paved wash directly across from the site and backed straight in, Easier than the only thing easier would have been pull through)
But I've gotten many a laugh watching folks back trailers.. Something I happen to have done many many many times before I got my class A.. Often very amusing.