So I just bought a set of bbs rs with these specs:

16x7.5 +35
16x8.5 +35

My question is, if I change the lips for other ones with .5" more to go with 16x8 and 16x9, what would be my offset ?? I cant figure it out ...

Thanks !

 

1 inch = 25.4 mm <-
Adding .5 inch to the face of youre wheel is moving the "center" of your wheel 12.7mm closer to the face. Half that again is 6.35mm. 35-6.35=28.65

New offset: +28.65

 

Thanks! I think I will keep the lips I already have cause I have to put 10-15 mm spacer... I wont be able to pull it out 16x9 + 28 with a 15mm spacer... My fender will be destroyed !

 

Why do you need a spacer? Caliper clearance issues?

 

No, my rear wheels touch the shocks without a spacer