Wanting to replace tires with 37 12.50 BFG All terrains, how is the ride quality?

[Takecover]

My tires are due to be replaced soon, and I would like to go up to the 37's. I tried to do a search but no luck. I am wanting to keep my factory wheels and run the 37 12.50 AT's. I do not want the ride quality to drop at all, I really love the ride of my truck!! Are there any problems with the speedometer being off? Thanks in advance for any help!

Jimmy