Good. Towed a 28ft travel trailer for a friend (5900lbs dry) with no squish or soft feeling while towing.
Heres a pic of them on my stock rims towing my sled trailer with all my house crap in it... I was moving.. I over weighed the front but you can see there is hardly any squish in the side walls

 

what were the exact height and width on the factory rims?

 

Hmmm I dont really remember. They were only 1/4 in taller than spec I believe, and I never measured the width but seeing the tire from head on from the stock rims(7.5 wide) to my new ones (8.5 wide) they are definitely wider on the new ones

 

gotcha would they poke out at all with stock 20x8.5" rims?

 

They should fit flush with the fenders. Here's my 295's on the stock 18

 

nice man!!

 

All the reviews say that people aren't getting more than 40k out of them :/