I'd like to get the top tier 2.0 Prestige and it comes with P255/35R19s on the rear. The front is a 40 series tire. I have 18" 40 series tires on my Audi and never had a blowout. But will a 35 series 19" tire & wheel be very fragile? I'll be switching to a full set of 18" winter tires & wheels from December thru March, but we still have some potholes in the warmer months.