Need Help
 

I just bought a set of 18in 5 lug mustang wheels, i drove an hour and a half and when i got there i found out that they werent 18x9 and 18x10s but really 18x 10s and 18x 11s. My question is, will a 245/40/18 fit on the 18x10? Im driving a 2000 Mustang Gt Convertible, its lowered an inch, and i was also wondering could i fit 275 in the back without rubbing or having to get spacers??

http://www.americanmuscle.com/99-04-tire-sizes.html

P.S. 18x10s do not fit under our front end, if they were that big they would rub, a lot.
If you are getting new tires go with the recommended fit, they last longer, look and perform better.