To I have to regear my rear end if I'm gunna run 33s? Plz someone help

 

What year is the truck the newer trucks you can tune the PCM to the larger tire size it makes a big difference also makes the speedo right

 

i have a 2007 xl

 

Do u have to, no. Check your axle code on your doorjamb to see if u have 3.55(h6 I believe) or 3.73 (b6). If 3.73 u won't have any problems. I have 3.55 and 33s and its not too bad. Do u have 6 or 8 cylinder? If 6 u may feel the bigger tires take a higher toll on mpg and performance. U could regear but it is a fairly costly ordeal.

 

You can get it done in programmable perameters use the closet size there won't be 33 use tire calculated to figure it out you should do it but 07 have a 32 inch tall tire stock anyways