you definitly won't be the first or last person to do this. people put the 275 V710 (which is alot harder to mount) on the 17x8" wheel. but yea, subies and mustangs and a bunch of other cars will run the 275 on the 8".
Tire shops usually won't recommend it, but it's not for street use and they don't usually understand R-compounds very much.
Bridesmaid Racing2008 SCCA Nationals DS Runner-Up
2008 Kansas City NT DS Runner-Up
2008 Milwaukee NT DS Runner-Up
2007 SCCA Nationals DS Runner-Up
2007 Milwaukee NT DS Runner-Up
2006 ASN Nationals DS Runner-Up