To be honest I am not really sure, just from reading other postings it seemed like that what every one else is doing this is my first build and just following the the lead of other post but I am open for suggestion on 7 vs 8 on the front what are the advantages and disadvantages. I have BFG T/A 275/60r15 on the back and 215/65r15 on the front I would like a little bigger front tire