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      08-29-2019, 04:38 PM   #1
PLF69
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Drives: 2023 M3
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OEM Size RE71 vs Wider PS4S

My 255/275 Cup 2's are at the end of there life and I have been brainstorming on my next tire setup for a few weeks.

I did run RE71 on my M235i and I am well aware that they are terrible street tires. I never ran PS4S but from friends and forums they seem to be capable of track duty if you take care of them. No doubt Cup 2's will be faster but you still have to be gentle or you can destroy them in no time..

So I'm wondering, PS4S on wider wheels (19inch) lets say 275/30F-295/30R or even 305/30R. Would they offer close to Cup 2's or RE71 grip in 255/35F-275*285/35 format ?

I don't really want to invest on another wheel set but If I can get good performance and smoother road manners at the same time maybe I could live with the compromise of concentrating on my driving, taking care of my tires and relying less on grippy tires.

Cup 2 price is just a little too high to live with the delicatess they require, yes they are livable on the street but don't be fooled they are stiff and no PS4S. I think they make much more sense on the GT3/4 and these kind of ''track ready'' cars.

Another option would be to slap 255/275 PS4S or my oem wheels and buy another cheap set of 437M's to put 255/285 RE71 on for more serious track days. Good idea or waste or $ and time ?

please share your thaughts
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Fun/HPDE: 2023 M3 6MT Individual Malachite
Past:2023 M4 CSL, 2022 M4C Vert, 2020 M340i, 2018 M2, 2015 M235i, 2008 135i 550whp
Daily: 2023 X5 45e
Daily/Family: 2021 Atlas Cross Sport 3.6

Last edited by PLF69; 08-29-2019 at 04:45 PM..
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