Tires OEM BMW or VITOUR

Regarding the X3M - I have about 9 months and 6k miles or so dailying mine. It is firm but I don't believe it's as punishing as most reviews mention. The thing is a monster man. I don't know why anyone would need anything more in a daily. It handles easily as good as my RS3 did and maybe even less body roll despite being much higher CoG and the RS3 didn't roll much either. It feels direct and definitely feels rear driven.

I dont care about road noise so i stick to Vitour Tempesta Enzo semi slicks, insane cornering stabilty, dry grip is phenomenal as well as steering response.

Go for the Vitour P1. Just out a set on my MR2 this weekend. Wow so much grip

I'm running them on my C7Z (315/345s on 18s). Only one event on them so far (next one is tomorrow) and can confirm they are stupid fast. I was running Conti ECFs previously and about 70% of my first event on the P1s was trying to find the limit and learn the tire.

Awesome bike, but swap out the stock tires asap.

Swapped my wifes Z4 from runflats to normal.

Pros: better ride, less likely to crack rims, cheaper tyres.

Cons: no spare tyre.

Before I switched I had 4 sidewall tears, one bent wheel, and one cracked wheel. $3000 in damage. After I switched, zero issues a year and a half later. Smoother ride and less road noise too.

For better handling and winter traction, I would consider getting wider tires.

as a tire, they seem slightly dubious as far as the 200tw rating goes (although a052s are super low-duro too). they don't work well on heavy cars and from a buddy who runs them in practice/at non-scca events, they seem to overheat/slide a lot (corresponds to what the GRM article states). but they for sure are quick.

The run flat tires are terrible. They feel like they are made of concrete and the grip is very lacking.