Hi all,

Question,

Say you have two rims. One 17x8.5+30 and the other 17x9+35
One both these rims you have the same tyre 245/40/r17

Would one perform better than the other? As in more grip, therefore handling better?

The 8.5 would balloon out and have more tyre surface to road?
I see drag cars run massive tyres and small rims. This is for traction, does it only apply to the straight and not the twisties?

I hear stiffer tyre walls are necessary for hard/tricky corners slaloms, but wouldnt high end tyres have stiff sidewalls anyway? Plus the side wall is 40mm isnt that considered low enough already? I know you can go lower like 30 but I'm just asking about 245/40

Im also aware of the basics of unsprung weight. So wouldnt it be better going the 17x8.5+30, as its weight is lighter, however the slight the difference maybe?