Help me figure out this new off set?

[ThatOtherGuy]

I have a set of 15x7 BBS RS 070 ET16

So if I can possibly do math

25.4mm=1 inch

so if i remove my .5 inch lip, i will have a 15x6.5 with ET28.7

Now if i put on a 2 inch lip

I get a 15x8.5 et -22.1?

Is that right?

And if so, Will that even fit(w/o major rolling and pulling)?

Thanks,
Das

[z31maniac]

Easy to remember guide for RSs (assuming you only change the lip, and leave the barrel alone).

Every .5" wider you go on the lip, corresponds to an increase of ~6.1mm in offset.

So your 15x8.5" wheels would end up being approx ET -2. That's in stretch tires/flat roll land if you want to be low.

[8380 Labs]

spot on, nice explanation too. :)

[z31maniac]

I try to occasionally be helpful!

[ThatOtherGuy]

sweet thanks man, i thought the ET-22 mm was a little off.