Here's a pic of an R34 with 20s at the BAS. I remember sticking my fingers under the guard and could definately feel a bit of scrapage. Do not get the one with offset +20 as they are more GTR offsets and u will definately have issues with the wheel sticking out past the guards. It'll be a very tight fit and there is no sure way to find out but to do a test fit before u get it. Post some pics when u get it done