it handles good still.better than with the stock 20s at legal hiway speed.at not so legal hiway speed it does lean a bit in corners,but hey they are 40s.i didnt even balance the tires & there is absolutely no shake or shimmy.nitto makes the roundest tires ive ever seen.i dont run a steering stabilizer,so i expected the worst,but this is the second set of mud grapplers & both have tracked perfect.mileage is reading 12-14 on the edge programmer,but honestly i really dont care,i am happy with mileage suffering a bit if i can have a truck on decent size tires