Kaduku

Should I put better tires on my 20 inch Carrera wheels like Michelins or replace them with 19 inch Carrera V wheels.
Looking for a smoother and quieter ride.
I currently have Pirellis.

LehmanZ06

See if you can swap wheels and tires from a base Carrera.

Base Carreras come with either the Advan Sports, or the Goodyear Asymetrico. I took off my Advans after 500 miles and stuck on Bridgestone RE-71R's for handlinding upgrade, but I don't like the noise upgrade. If you were in South Florida I could sell you my stock Advans in my garage with 500 miles on them.

Personallly I like the look on the base Carrera wheels better.

Kaduku

This would be the plan if I could get a consensus here.
Though I do like the look of the 20 inch Carreras, but I think 19 inch is big enough.

kayjh

What year car are you driving and which model? If pre 2017, does it have PASM?

Kaduku

No PASM. 2014 991 Base

Hurricane

Have you adjusted the tire pressure to comfort level first?

StormRune

The very first thing you should check is your inflation pressures. There are quite a few threads about this, but in summary:

The dealers tend to set the cars to "full load" pressures that make for a stiff ride. Some people see this number on the door sticker but don't notice the additional text saying to consult the manual for other pressures.

Full load is 36/44. I tend to use the Comfort partial load pressures of 31/37. Either check the manual for the various settings, or use the stalk-controlled multi-function-display to change your load/comfort settings and check Fill Info for how much to change your pressures buy for the new settings.

The ride quality difference is huge and I find I'm just fine with the performance at Comfort for most sporty driving. I'll increase them to non-comfort pressures for something like autocross though.

As kayjh asks, it would also be good to know your tire's ages and which suspension, norm/PASM/SPASM. Our tires start stiffing up pretty significantly after 4 years (or less with a lot of high heat cycles).

StormRune

Beat to it by Hurricane again! That's what I get for having long-winded posts

NVRANUF

/\ What he said! /\

Kaduku

First thing I did. I even lowered the tire pressure to a level that I do not want to lower any further.

I had a 14 Boxster with 19s and those weren't so bad.

Kaduku

Maybe a new set of tires would make a difference for the 20s?

R_Rated

michelins will be better - certainly much quieter. Marginally smoother.

RCD

I am running 19's with comfort mode settings on my 2013 991. I can't make a direct comparison because I have not tried 20's on my car, but the 19's give a very smooth ride.

Hurricane

Kaduku

Trade? Lol