San Diego = roads as smooth as a billiard table. You wouldn't last a DAY in Philly. I used to poo-poo at all the bubble posters, then as I was swapping in the 21"s in for the summer I noticed a small bubble on the right front, that I must have acquired last season. Since I swap my own wheels I check them thoroughly before installing. This bubble was barely detectable. It may have formed over the winter while in storage.
Once installed = what if you get a bubble on the inside? Bobby probably has a bubble on one of his inside - facing tire walls but doesn't know it.
35 series tires should come with an inspection mirror on a pole so you can do a daily check on the inside-facing tire walls.
View attachment 20370with a light
I find the 21" Pirelli
SMOOTHER and
QUIETER than the 19", and
much better at everything but cold weather and range. For me, it's worth it to have a tire that will not limit what the car can do. I believe the car's suspension was engineered for the 35 sidewall summer tire. I thought I read in the owner's manual something like:
" ... don't be an idiot and use SPRINT mode when you have the 19" tires on" or words to that effect. That alone was enough to make me seek out a set of Lucid summer wheels/tires to swap in when the weather permits.
I run 19" Pirelli A/S at 50 psi and the 21" Pirelli at 45 psi
Result: I have two different cars !
I do like the Michelin Pilot tires, but at $250,000 / set ... I can wait.