Apart from other problems. I noticed a odd thing that the Speed is reading about 5-10 off from what I'm actually going. Ive only had the truck a few days. I did test drive it but was just kinda cruising with the flow you know how it is. But driving it more yep its off. I haven't measured to see if the tires are bigger than the factory ones. But the guy at the auto parts shop did a comp scan and it said right front speed sensor was bad. Would that do it on its own? I kinda need to nip this soon as its throwing the millage off and confuses the shifting. Well on a positive i might have 5% less miles on the engine!