Hi-- I have a 2016 JKU auto 3.21 gears and currently have P265/75r16 Hankook ATM's on stock 16" wheels. They are about 39lbs. I'm thinking of moving to LT285/75r16 all terrains that will weigh about 57-60lbs for no other reason than I'd like slightly bigger tires. Does anyone know from experience what kind of hit I will take in MPG, power, etc.? The stock tires were p225/75r16's and other than the speedo being off I don't notice much power loss except rare times when I'm on the highway in the mountains. Unfortunately most 285/75r16's are heavy D or E range and 255/85r16's are just as heavy E range mud tires. Thanks!