I am getting 225/45/17 RT615 tires for the stock 17x6.5J wheels on the mazda3. The tire size is a bit too wide for the rim, but I see many people using tires that are waay too wide for the rim at autocross events, so I assume the effects of this sort of mismatch are well understood.
My questions are:
what pressure should I run the tires at for autocross? For the stock tires (205/50/17) I was watching rollover, and ran the lowest pressure that would not allow any (41 psi for eagle RSA). Does the same rule of thumb apply to the wider tires?
what pressure to run on the street ? I am planning on using the same wheels and tires on the street since I am not ready to swap wheels all the time just yet. lucky for me, our region has a "road tire" class, which means I have to use stock wheels. Any recommendation for street pressure for safety and tire life are appreciated.
Camber setup: with normal tire sizing my front camber goals would be max negative within factory allowance: -1°40' , how about with the oversize tires -- do I still want max camber?
Are there any peculiar handling characteristics that I should expect? the gut tells me the breakaway should be more sudden, is that correct?
any help would be appreciated.