[Ofield_94]

Just fitted my summer tyres back on today & noticed how my front PS4S tyres seem to be peeling on the sides and cracking. I've had them for about 3 years now & have covered around 27k on them so I'm not too disappointed in their wear.

I currently have new PS5's on the back so naturally would look at replacing them with this on the front. My only issue is that the PS5's on the back seem to be narrower than the PS4S's that came off last year, despite both being 255/35/19 in size. Has anybody else noticed this? Could this have just been a bad batch or do you reckon this will be the case for the front 225 section PS5 as well?

The only reason I'm concerned is because 225 is quite narrow for these cars anyway, so I wouldn't want to be going to a narrower tyre even if it is labled as a 225 width. Another option is going to a 245 but the price difference between the two sizes is quite large.

[330DW]

Hi, here's what I believe might be going on.
The PS4S has really square shoulders and gives the tyres a bit more of a "meaty" stance compared to many other regular tyres. I remember getting them fitted to my 3 series and thinking how the wheels seemed to fit the arches better, especially on the rear.

I haven't checked but I think that the PS5 is most likely the successor to the PS4, therefore more of a general high performance tyre instead of the PS4S Ultra HP spec where the sidewalls will more square for high speed cornering stability or grip. If it's 225 on both tyres the general road contact patch shouldn't be different to any significance.

If you have been happy with the PS5 on the front (if I were you) I'd go for PS5 on the back as well.

Hope this helps!

[un1eash]

As above, I have PS5 on the rear and PS4S on the front and the fronts do have a bigger bulge to the side wall that makes it look more like "track" tyre where as the PS5 is more conventional and square.

[TurboWeasel]

The PS5 is more road orientated so won't be as chunky as the 4S.

Similarly, the OEM Bridgestone SOO1 looks almost stretched on the front, but the Bridgestone Sport is beefier looking.

Same with F1 SuperSport vs F1 Assymetric 5/6.

Annoying that Michelin have pulled 225/45 and 255/40 18" PS4S from their catalogue

Gonna have to get Sport Contact 7s instead, which actually in all fairness, is just as good, if not better tbh.

The only downside of non runflat is even vaguer steering due to the softer sidewalls.

PS4 Zero Pressure might be a better option than regular PS5 if people prefer run flats.

[Ofield_94]

Originally Posted by un1eash

As above, I have PS5 on the rear and PS4S on the front and the fronts do have a bigger bulge to the side wall that makes it look more like "track" tyre where as the PS5 is more conventional and square.

Did you have any trouble running these two tyres together under recommended pressures? My stability light kept on cutting in even at low speeds before I decided to increase the PS5 pressures on the rear which seems to have improved things drastically.

[Ofield_94]

Originally Posted by TurboWeasel

The PS5 is more road orientated so won't be as chunky as the 4S.

Similarly, the OEM Bridgestone SOO1 looks almost stretched on the front, but the Bridgestone Sport is beefier looking.

Same with F1 SuperSport vs F1 Assymetric 5/6.

Annoying that Michelin have pulled 225/45 and 255/40 18" PS4S from their catalogue

Gonna have to get Sport Contact 7s instead, which actually in all fairness, is just as good, if not better tbh.

The only downside of non runflat is even vaguer steering due to the softer sidewalls.

PS4 Zero Pressure might be a better option than regular PS5 if people prefer run flats.

Got to admit, I was very tempted by the SC7 but wasn't to sure what the wear and road noise would be like.

[TurboWeasel]

Originally Posted by Ofield_94

Got to admit, I was very tempted by the SC7 but wasn't to sure what the wear and road noise would be like.

I had them on my 19s before I sold them and they are superb. No issues with noise or wear. They don't do them in run flat though, which may put some people off.

[Ofield_94]

Originally Posted by TurboWeasel

I had them on my 19s before I sold them and they are superb. No issues with noise or wear. They don't do them in run flat though, which may put some people off.

Think I'll give them a try next time round then, don't really care for run flats as I feel the negatives outweigh the positives. I had the Potenza s001 for a bit and they were awful.