Summer Tire replacement - stay with 21", or drop to 19"

[Gizmotoy]

Keep us updated with any longer term feedback, its always helpful to get perspective from someone that has used both wheel diameters !

Doc, do you have a feel for the relative performance between the A/S 3s and dedicated summer tire like the Continentals. I'm a bit incredulous that a regular all-season could beat-out the performance of a decent dedicated summer tire, but we've repeatedly seen comments to that effect here. Any thoughts?

 

[dj905]

Doc, do you have a feel for the relative performance between the A/S 3s and dedicated summer tire like the Continentals. I'm a bit incredulous that a regular all-season could beat-out the performance of a decent dedicated summer tire, but we've repeatedly seen comments to that effect here. Any thoughts?

My qualitative perspective is that the 21" Continentals do beat the 19" A/S 3s for dry road traction, but it pretty close. It's the other issues that have swayed me to choose the 19" wheels.
It would be interesting to get a quantitative view, eg 1/4 mile time comparing these two options. Has anyone done this?

 

[mandfunk]

http://www.teslamotorsclub.com/attachment.php?attachmentid=57154&stc=1&d=1408678188

AndreyATC, this is absolutely beautiful. You mentioned elsewhere that this is "Im running 20X9 35ET and 20X10 32ET, which makes it a bit more aggressive than your 20s, also more flush with the fenders. Wearing Pilot super sport, 255/40/20 and 285/35/20."

Are those rear wheels really +32? Wheel and tire doesn't look like it sticks out past the top of the wheel well at all, is that correct? I'm about to order 20x10...was going to do +35 or +38...was worried that +35 might stick out too far (with 285/35/20s just like you). Does +32 protrude at all? Would you go with +35 if given choice?