M5 tires in 19 or 20 - please tell your story

Hello,

This thread is cross-posted from "F10 M5 (2012 - Current)" forum too.

I was looking at the M5 tires for both standard BMW 19 or optional 20 inches wheels.

You have those dimensions:

265/40-19
295/35-19

or

265/35-20
295/30-20

Looking at Tirerack and other tire providers, it seems quite difficult to get them (availability is low, you have to order them) and there are no run-flat version of them. As far as I can search, there are only Michelin Pilot Super Sport and Pirelli P Zero Max that could work for such a car.

I am currently having run-flats on a 335 and those have actually been very convenient when I got a puncture (I could go back home and wait a day before going to the tire shop). I could also made them repaired quite easily too.

BMW is also providing a "repair kit" and I would like to know if it works nicely and could help me wait a few days until I get a new replacement tire. Also, after using the repair kit, would the punctured tire be fixable or not ?

Last, I have heard that the 20 inches are a bit more noisy than the 19 inches ones.

Tires size is not only about aesthetics, right ?

Thank you for your feedback and suggestions.

I think 19" is a good way to go, when I got my M5 a few weeks ago, found out the 20"s were a bit bouncy ride, so I changed to 19"s on day 3, ride is better now, but others may like the 20"s look, so I may sell the 20"s.