im going with 35's and need to know if 4.5" or 5" will be better, sorry.. i must not be a good searcher! have been looking for a while tonight and want to order in the am, thanks

 

A lower number pushes the tire out further. Higher number pulls the tire into the wheel well further. Most lift mfg's recommend a 4.5" BS for 35x12.50 tires. (stock bs is around 6". So a rim with a 4.5 bs sits about 1.5" further out than stock.)

The two threads stuck to the top of this modified area are a real good place to start ...

 

4.5 bs

 

thanks, 4.5 was how i was reading but wanted a 2nd opinion before laying down the coin!

 

Yeah stock is like 6.5"
4.5 will clear a 12.5" wide tire so it won't rub