Well I have finally pulled the trigger on lifting my 05 4x4. Im going with a 3in level, 3in body lift, and an add a leaf for the back. Im going with 37x13.5x17 mud grapplers. My question is which wheel will be the best so that i have to do the minimum amount of trimming. I know that I will have to trim some, but less trimming is prefered. Im looking between two pro comp wheels. Both are a 17x9. One has a backspacing of 4.5in with no offset. The other has 4.75in of backspacing and -6mm of offset. Which of the two is going to give me the least amount of trimming?

 

With 13.5" wide and 37" tall you want more backspacing. So, the 4.5" will push the wheels out further and is what you want/need. Those 37's will be pretty tight in there to boot.

 

3" of level AND 37s! LOT of angle and stress gonna be on those CV's. Have you thought this through?

Level kits put a LOT of angle on them CVs. 2.5" of level is pretty severe, I can only imagine what the angle would be with 3" of level.

 

dirty- If more backspacing is better than would the ones with 4.75in help me more than the ones with 4.5?

Hammer- Yeah after talking with Nick (dodgenitto) I have decided to go with this set up. It has worked well on his truck for over 70k and he beats the hell out of his truck. I can honestly say that I dont.

 

The higher the number on the backspacing, the more the rim sits inside the wheel well. You want a lower number (like 4.5) because that means there is less distance from the hub of the wheel to the inside edge (which pushes the wheel out more)

 

Here ya go bud so you can check it out. Some good wheel info.

AF hit it. The larger the number, the closer to the outside of the wheel that surface is. Basically a 0" BS would mean the wheel is completely deep dished, and the bigger BS would be like a wheel on a front wheel drive car.
Offset is the measurement from the center of the wheel and BS is the measurement from the mounting surface to the backside of the wheel.
Offset is a direct result of how much BS you want given the width of the wheel. An 8" wide wheel that has 4.5" BS will have a different offset than a 9" wide wheel of the same 4.5" BS.
Just worry about BS and not offset.

 

although ideally, your wheel would have a 4.5 BS with a slightly negative offset (-6 or -12). The BS is much more important though

 

4.5" with no offset is the same as 4.75 with -6mm offset.