255/35 & 305/30 are not stock sizes in diameter...they are smaller. Stock is around 26.6 to 26.7" diameter depending on the brand you choose. With Hankook for example, the 255/35 is 26" and the 305/50 is 26.3".
Now I love the 255/35 & 305/30 combo myself, but yeah you'll want some higher offsets than +24 maybe if you're leaving it stock height. If not, a 245/40 & 295/35 is for someone very picky about stock diameter...they are just not as wide (could be heavier).
I have 255/40
& 305/30
right now. This is just the tires that the wheels came with, but I plan on changing the fronts when they are worn.
These are the exact wheel specs you mentioned with +24 all around, but with a Eibach Pro Kit -0.9"/-0.8" drop. Obviously if you raise the car up a little the wheels jump out easily toward the fenders.
I have -1.4 front / -1.6 rear camber in these pics and a full tank of gas.
