I had 15*7 Simmons on my WB. They had 225 60 series tyres. Looked ok. To be honest, 14*8 with 245 60 series on rear and 235 60 series on front fill the guards out the best. Why do you think every one took the poxy (at the time) Holden wheels off. Not to fit a set of 6 or 7 inch wheels that's for sure.