Thanks @davidmc and @Envchem - am going to have to go for Primacy 4s as that’s all I can get tomorrow locally. It’s a rear puncture - any recommendations whether the new tyres should go on the front and move the fronts to the rears? Have done 12,000 miles. Am going to keep the other used rear just in case as well.Yep you can (as long as they are similar to the same spec that you have - ie 235/45/R18 98Y XL)
My 2019 M3 came with 18inch PS4's but the newer 2020/21 model comes with Hankook Ventus S1 Eco3. So i'm getting the Hankooks next (around £121 per tyre).
Also quite a few people say the Vredestein Quatrac Pro's are also very good