I just ordered some 18" black deep dish bullitts and tires. They are 18x9 up front with +40 offset and 18x10.5 in the back with +50 offset. Can I use the lugs that are on my 16" wheels now to bolt up my new wheels??

 

Yes if thats the type of lug nut the wheel takes. Thats a lot of offset for a front wheel. I have AmericanMuscle chrome bullets 18x9s for the front and they are only at +34mm

 

Well I hope it works out okay. They are suppose to bolt up to 05 and up mustang with no mods. They are AFS wheels. If the offset is higher what does that exactly mean?

 

Offset really won't affect the lugs, at least not as far as i know. One thing to check is to make sure that the surface where the wheel meets the lug is the same profile (ie, acorn shaped vs flat). If that's the same, you should be OK.