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M2 Technical Topics > Track / Autocross / Dragstrip > OEM Size RE71 vs Wider PS4S

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      09-02-2019, 07:21 AM   #23
PLF69
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Quote:
Originally Posted by dcmac View Post
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Originally Posted by 5.M0NSTER View Post
This. The balance is a big part of the reason a lot of people here buy the M2. Going square adversely influences that balance. Unless you like a very tail happy car.

OP, I'd suggest OEM size RE71s. This is also my plan next year when the factory MPSS are done.
I’m running 265/35/18 71R’s square this season and I don’t think the car is tail happy. Sure, it rotates easier and I have to be careful with throttle on exit, but the turn in and mid corner grip is so worth it. I suspect staggered is a little quicker but for pure enjoyment and dancing with the car I’ve really enjoyed going square this year.

Also to the OP - why do you think the 71R is a horrible street tire? I love it on the street, gonna use em on my OEM’s next summer.
RE71 are perfectly drivable tire on the street but if you compare them to PS4S, they sound like your unrolling duct tape forever, the carcass is hard and less compliant, they like to flat spot if not driven daily, the more they wear the louder they get and they don't wear very well depending on your alignment and track use.

Thats why I said they sucked on the street but if you can tolerate all this they are very streetable..
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      09-02-2019, 02:10 PM   #24
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I also enjoy off throttle rotation after turn in. Thatís a lot of fun for sure. But I also enjoy the planted feeling with the staggered set up at the apex when I start applying throttle and the weight transfers to the rear, and then being able to roll onto full power by the exit without fighting the squiggles.

I think this is very subjective and we all have our preference. To me the car feels perfect with a staggered setup. The tracks I run these days have no runoff room so I like it hooked up in the rear. Nordschleife is super tight.

Also thanks for the note about RE 71s as dailies. That will be my setup next year in 245/265.
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      09-02-2019, 02:25 PM   #25
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I will be doing what you mentioned in your initial post. 255/275-35 4Ss on OEM wheels for all-around track / rainy weekend wet driving / street. More then likely, 255/285-35 RE-71s on another set of wheels for max performance on the track in the dry. I have been running 255/285-35s for over two years now and love the setup, still getting faster too! I do rotate them insides out once per set as well, at about 40-50% wear. You would find the RE-71s in 255/285 have more grip than Cup 2s, they are great in the wet as well.
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      09-02-2019, 02:29 PM   #26
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I don't know what your suspension situation is like, but it's much better to dial in more traction with coilovers, sway bars, etc than to upgrade tire width.
Definitely the truth! Very noticeable when stiffening up the MP coilovers, don't seem the feel as greasy. Although, you are burning through the tire faster. Better all-around tire wear as well.
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      10-13-2019, 03:38 PM   #27
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Still waiting for my Apex wheels but I'll be driving on 265/295/30 R888R. Recommended by Apex.
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