305 and wider on 11 inch front wheels

[CTH621]

I've read about some guys doing 305/30/19 square setup on 11 inch wheels up front. Mostly for road course racing. And most of these guys on coilovers with camber setting -2.5 or more. I'm curious, are there any guys using stock style struts and lowering springs with this 305 on 11 inch front setup? What's your camber? Anyone try this but experienced rubbing on the fenders on hard corners? I'm on FRPP Track dampers and BMR handling springs. Using MM camber plates maxed out at -2.15. Currently on 10 inch wheels up front and 285/35/19. 11 inch wheels at the back also on 285/35/19.

Since I go to the road course a lot and participate in time trials, I'm planning to go 11 inch wheels squared on 305/30/19 but worried about rubbing.

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[WildHorse]

There's a point when you can put to much stress on a sidewall, & IMO 285's on a 11" wheel is too much. I mean even the 19 PP2 uses a 10.5" front w/ a 305 tire so an 11" with proper backspacing shouldn't be a problem.