Lumpy 
2017 Toyota Tundra Double Cab SR5 4dr Double Cab SB (4.6L 8cyl 6A)
V8 5.7 versus 4.6 L
 I had a 2015 Tundra SR5 5.7 L for 2 years and was t-boned from a side street, and it was totaled. The kia car who hit me, literally there were thousands of pieces of his car all over the road! The only piece of my Tundra that fell off was a letter or two from the chrome "Tundra" that is on the side of the vehicle on the front passenger's door. That's it other than the side 2 doors being smashed in real good. Mine was totaled due to bending the frame at the back under the car. I went out with a nice insurance payout and got a 2017 Tundra SR5 with the smaller 4.6 L engine. In the 2 years I had the 5.7 L, I never pulled or towed one thing. So I test-drove the 4.6 L. I could not tell any difference test-driving for 15 minutes. So I got the 4.6 L. Here is what I can tell you after having it a week. The 4.6L is MUCH better for driving in town and urban areas - stop / go / 35 MPH-50 MPH. The transmission shifts more smoothly and feels better driving. I can also tell it accelerates faster from 0. The 5.7L roared and did not like to go under 50 MPH it seemed. In town traffic driving the 5.7 L in 25-50 MPH stop and go was painful. Transmission shifting out from 0 was just ok with the 5.7 L but the 4.6 L is better. I don't know how much weight loss the truck has from the 5.7 versus the 4.6 but I swear the truck feels lighter and more nimble. I like it better. I don't pull/tow/haul but I carry stuff in the bed so for me, the 4.6 L works, and I like it better.