Quote:
Originally Posted by KoenG
I'd say, two times no:
1/ the rear-axle mainly needs to deal with the lateral forces for propulsion, but the front-axle (certainly in combo with AWD) only deals with transversal forces. A higher side wall on the front provides a more progressive behaviour on steer-in. I remember going to a driving course of BMW and the instructors learned me that I provoked understeer by being too aggressive on steer-in. The higher side wall helps to be more progressive and it uses the grip limits to determine the tightest corner and renders a cleaner traject with less understeer.
2/ In the AWD version, the front axle becomes also responsable for the propulsion. In this case a stiffer side-wall makes sense. But seen the weight distri (which will be worse for AWD) and the potential understeer behaviour, I would bet that M prefers the staggered combo.
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I agree with that, the only question mark is why the M5CS isn’t getting the staggered diameter. They are hunting Nordschleife records with that car and this seems like a simple/cheap/obvious solution if it helps with even half a second per lap. We haven’t seen the official M5CS specs yet though but nothing about staggered wheels has been mentioned.