I bought a pair of Nitto 555R tires in 305/35/20 size. My base GT has an Eibach Sport line lowering kit. Will the tires fit with some negative camber? The rims are Rovos Durban 20x10. The tire.shop guy seems concerned they may not fit. Thanks.
You might need some spacers. What part of AZ you in? I’ve got some 15mm just sitting in the garage. They’re yours if you pick them up. It will push the wheels out and give you some extra room. I was using them on my old wheels
Here is an 18x10" ET43 with a 305/35-18 NT01 mounted. No spacers in the rear were needed for inner clearance. Obviously the height of yours rears will be quite a bit taller, however this should clarify inner and outer clearances.
This S550 track car was running them on all four corners, so the fronts definitely needed spacers to clear the struts. Once we came out with our 11" wheels, he switched to those for much better sidewall support.