Have a set of above in 18x8 et 35, Car is running on koni all round and lowered, wheels that are coming off are 17" cxn's same et but 8's front and 8 1/2 rear so arch trims on car are trimmed back. So questions i'm asking is i've been told i can only go 215/35 on front but can I put a 225/35 on the back and a spacer on back to fill out the arch and if so what size?? Any help would be appreciated THANKS, Ross.