[rjabend]

Originally Posted by PeteSD

Just so nobody does the same thing...

I have a 2024 Xdrive40i w/21" tires. It came with Bridgestone Alenza RF tires.

I thought I was being clever by swapping them out for BMW approved Pirelli Scorpion Zero tires that are non-run flats + adding a spare. I have always felt RF tires rode worse than traditional tires.

How wrong I was! The only thing the Pirellis improved on was steering response. Everything else went downhill.... noise, ride quality, etc.

Putting the Bridgestone RF tires back on and sucking up my pride. Thankfully, tire shop offered to refund my money.

Thanks! I also have the Bridgestones.

[mitch57]

I have the 21 Bridgestone Alenza NON Run flat tires on my 2020 X7 40i and they have been great. I'm on my second set. I got over 40K on the original set of tires.

I drove a BMW X7 40i loaner that had the 21 Bridgestone Alenza RUN Flat tires. I could tell the difference within 30 seconds of driving the loaner. The loaner was nosier, rougher, and not nearly as comfortable as my 40i with NON run flat tires.

I will never put run flat tires on any vehicle I own.