I just put a Rough Country 3.75" lift new wheels 17x9 and tires Maxxis Bighorns 285/70/17R. My cruise control isn't working anymore, I've read some reviews and people said there lights wouldn't work either. I have looked into that on my truck, but any suggestions on the cruise control? FYI I will post another thread on the rough country lift and my aspects of it so far and I'll have a picture. Any help will do thanks!

 

unless some reason you had to unhook a ground somewhere its unlikely its related to the lift

 

Changing tire size would only make the speed you are going at inaccurate. It would not make the system not work at all.

 

I concur, I'd guess you have something unplugged when you worked on it.

 

Thanks guys, I'll have to take a look at it again, my speedometer completely didnt work at one point but fixed the problem maybe I just did something slightly wrong thanks for the help. I haven't worked with cruise control too often, where do I start in an 08?