One small thought. ( I have lots of those). I was at the dealer last week and the manager had mentioned that the camry and Sienna share the same chassis.

that obv. doesn't mean that you can put the wider tire in there, but it was news to me.

 

Two words - bumpy ride. Hate 'em. Had 'em on another car, and they made my teeth rattle. We got rid of them, and still don't have a spare (no room, it's a MINI Cooper). Instead we have AAA, a can of Fix-a-flat and a one-shot air compressor. It's a risk we're willing to take.

 

Which brand of run flats? My Dunlop DSST seem pretty smooth; can't tell the difference between this and Michelins (I'm sure vehicle suspension has a lot to do with this.) Neither can anyone else that drive them.

True, roadside assistance helps, as does fix-a-flat (although does that stuff hurt a TPMS (tire pressure monitoring system?)

The advantage I have seen to run flats is that tire "blow-outs" are rares, and you can maintain control of the vehicle; I've been nearly killed by tire blow-outs three times in my life, so anything to reduce that lose of control is a safety plus.

 

Most people never experience a blow out, and you've had three? You have any enemies?

 

Unless you consider the roads of Michigan, Illinois, and New York enemies :-)

Been driving for 25+ years....it happens more often that you'd think in states with crappy roads. However, newer tire tech has reduced this somewhat.

 

LOL, the roads in Jersey aint much better. I've only seen two tires fail while driving, both trucks that lost the retread (I guess that was what it was). Not sure if that qualifies as a blow out.