MY AEV/ Falken Wildpeak A/T3W 35's E Rated combo is right at 100lbs. I was surprised to see 8th gear as much as I do. It's not a huge difference to be honest. I get 21-23 mpg unless I am on the interstate at 70+mph, then its 18-20 (2.0 turbo). I've been playing with tire pressure between 30 and 34. Under 30 and I get some side flex and it feels like I am on mash potatoes.