Tyre advice: how many types of Pirelli P Zero are they?!

[MoFoHo]

Hi all, I need some advice. Are there any knowledgeable tyre nerds on here? 4 photos. The 1st 2 photos are of my front tyres. They are...Pirelli P Zeros, with quite a thick bead that protects the wheel. The last 2 photos are my rear tyres. Also, Pirelli P Zeros, but they are definitely different, not as pronounced rim protection. I hope the difference comes across in the pics. I need to change one of these rear tyres. A thorough vehicle check by a BMW specialist in Leeds I use, identified a cut in one of the rear tyres, so it needs to be changed. Obviously, I'd like it to be the same type of Pirelli P Zero! I didn't know there were different types!? Could anyone please advise me what are the different types? Also, a 2nd question if I may? My car has CCBs. Expensive, potentially delicate things. Do any owners have these types of brakes, and if so, whom do you trust to take off the wheels? I'm in the UK. Whilst getting my company cars tyres changed last month, ATS just advised me that they clobber them off with a sledge hammer, not confidence inspiring...

[Qsilver7]

Not enough tire info given….what does it say on each sidewall (front/rear) and are the tires a staggered size or a square set?

See info below and at link to determine what all the info on the sidewall reveals:

https://www.discounttire.com/learn/r...-tire-sidewall

[MoFoHo]

Many apologies for the delayed reply, life has been hectic!

My front tyres say: 265/35 ZR20 (99Y) DOT TXT X0V91B 3423 PZ4
My rear tyres say: 295/30 ZR20 (101Y) DOT XT AE M393 1721

Does staggered size refer to the fronts/backs being different sizes?

[Qsilver7]

Originally Posted by MoFoHo

Does staggered size refer to the fronts/backs being different sizes?

Yes. The tires are different sizes due to the wheels also being different sizes. The rear wheels are usually a 1/2 inch to 1 inch wider…which requires a wider rear tire with a different aspect ratio (the middle number) to keep all 4 wheels with the same rolling circumference.

[PixelVogue]

Bin them all and get a set of Contact 7s, much newer tech and alot better all around. Those wheels are 1" wider on the rear, 9j and 10j. I have them on my 640D.