Rep Power: 301

My brother works for a company that takes tires of rims and puts new ones on. Well I bought SI rims and the guy before put the worng size on the tire? Can i cut the tire and take it off that way or what should i do? What size tire do u think i can go on my car? like a 205 need some help here? Can i cut the tire or what?

 
Rep Power: 257

If your brother works for a tire store why not just get him to take the old tires off?