I am running 13" radial race slicks for P1/Formula cars on my TT Super Seven (1,500 lbs with driver). The Goodyear slicks I run for the back are for 11" wide rims according to the Goodyear data. I have 10" rims and 12" rims and don't want to invest in another set of rims. Is it better to run the 12" rims or 10" rims.