PS4S Steering vs PSS

Zomboss · 07-08-2021, 11:41 PM

Quote:

Originally Posted by MarcusS55

I attempted to do just that, but the PSS are discontinued and we won’t be able to purchase them anymore. :,(

Good point on PSS* being discontinued. Tire Rack still shows availability for 666M stock size. I still have a decent amount of tread left on the PS4S. Maybe I should just pick up a set of PSS* before they are gone for good.

Tecnniqe · 07-08-2021, 11:53 PM

I don't know, I went from the PSS to 4S on my 666s but also jumped up a size front and back and it feels great compared to the PSS. It's all subjective I guess.

maddmatth · 07-09-2021, 03:48 AM

Quote:

Originally Posted by CanAutM3

They do if you opt for 19-20” setup like the F8X CS

Oh, good to know

Wanted_M · 07-09-2021, 09:06 AM

Quote:

Originally Posted by icegrill

These reviews seem so subjective. Everything I've read states the p4s are the succession to the pss. I have relatively new star spec pss in oem 19" size but am adding a set of 19" hres. I was going to go with ps4s, due to all their rave reviews. Now I'm totally confused!?

I'd follow post #19 but have a 3mm or 5mm spacer on hand just in case the 275 front tire gets too close to shock/spring.

CanAutM3 · 07-09-2021, 09:50 AM

Worthwhile re-posting here, it addresses directly the topic at hand:

CJStevens · 07-09-2021, 01:29 PM

I went from PSS to PS4 on my F80 with 666's and they feel great. I don't feel any of the mushy feeling that people are describing. Sound also seems similar to PSS. I can't speak for other sizes, might be different for 18" or 19" wheels compared to 20's because of the thicker sidewall on the smaller wheels but on my 20's They seem just as stiff in the corners as the PSS. They are the replacement for the PSS which means they took the PSS and developed it more. They are a great tire choice. Just my two cents.

kctim · 07-09-2021, 07:24 PM

Quote:

Originally Posted by CJStevens

I went from PSS to PS4 on my F80 with 666's and they feel great. I don't feel any of the mushy feeling that people are describing. Sound also seems similar to PSS. I can't speak for other sizes, might be different for 18" or 19" wheels compared to 20's because of the thicker sidewall on the smaller wheels but on my 20's They seem just as stiff in the corners as the PSS. They are the replacement for the PSS which means they took the PSS and developed it more. They are a great tire choice. Just my two cents.

+1

Jimbooo · 07-13-2021, 12:11 PM

Quote:

Originally Posted by CanAutM3

Quote:

Originally Posted by Jimbooo

I have mps4s on 666m and another set on aftermarket wheels. I bought both sets at the same time and instantly regretted it. Car feels sloppy and mushy.
Only benefit is straight line grip.

I'll be going back to mpss ASAP. These things last forever. I can't kill them fast enough.

Oh and awful on track. Lapping 2 seconds a lap slower than same track with MPSS. All down to cornering speed and lack of feel. Understeer on every bend.

I'm in the I hate mps4s camp by the way ��

Randy Pobst was able to lap ~1 sec/min lap faster on the PS4S than he was with the OE PSS on their long term M2.

The guy from tyre reviews also got a better lap time on the PS4S vs the OE PSS on an M2.

Who knows. Might be the additional weight in the m4. All I know is my turn in is awful. Almost as bad as with winter tyres on. No steering precision at all.

I've had 4 sets of mpss over the years on m4's oe wheels. And 2 sets of mps4s on oe wheels and one set on aftermarket wheels. Wider at the back.

I've given them a fair try over that time lol. Played around with pressures and driven in all conditions.

Mpss grip a little less but the car steers like a go kart. That is lost for me when you go to mps4s but you gain grip. Both straight line and in the corners but at the cost of feel.

All depends what the drivers priorities are. I've spent so much time in m4's I do have it at the limit quite often when others may not push as hard and wouldn't notice the issues. Who knows. Just my experience.

It may well be that I return to mpss and find myself spinning out all over the place

Humdizzle · 07-13-2021, 12:46 PM

i went from pss to ps4. definitely more grip, there is no question about that. second gear with stage 1 hooks up all day now. they do seems quieter to me to. its possible there may be some loss in sidewall stiffness as it rides better over small road imperfections.

haven't taken the car out yet to fully exploit the steering. Then again we are talking about the f80... a car not exactly praised for his steering feel. its never going to turn in like a cayman.

overall its a better road tire imo and helps fix the f80s biggest flaw... lack of traction

CanAutM3 · 07-13-2021, 01:12 PM

Quote:

Originally Posted by Jimbooo

Who knows. Might be the additional weight in the m4. All I know is my turn in is awful. Almost as bad as with winter tyres on. No steering precision at all.

I've had 4 sets of mpss over the years on m4's oe wheels. And 2 sets of mps4s on oe wheels and one set on aftermarket wheels. Wider at the back.

I've given them a fair try over that time lol. Played around with pressures and driven in all conditions.

Mpss grip a little less but the car steers like a go kart. That is lost for me when you go to mps4s but you gain grip. Both straight line and in the corners but at the cost of feel.

All depends what the drivers priorities are. I've spent so much time in m4's I do have it at the limit quite often when others may not push as hard and wouldn't notice the issues. Who knows. Just my experience.

It may well be that I return to mpss and find myself spinning out all over the place

M2C weighs almost the same as an M4.

PS4S need higher pressures due to their softer sidewalls. Have you tried running 35-38psi in front?

JagR2611 · 07-13-2021, 09:30 PM

Quote:

Originally Posted by kctim

Quote:

Originally Posted by CJStevens

I went from PSS to PS4 on my F80 with 666's and they feel great. I don't feel any of the mushy feeling that people are describing. Sound also seems similar to PSS. I can't speak for other sizes, might be different for 18" or 19" wheels compared to 20's because of the thicker sidewall on the smaller wheels but on my 20's They seem just as stiff in the corners as the PSS. They are the replacement for the PSS which means they took the PSS and developed it more. They are a great tire choice. Just my two cents.

+1

Quote:

Originally Posted by kctim

Quote:

Originally Posted by CJStevens

I went from PSS to PS4 on my F80 with 666's and they feel great. I don't feel any of the mushy feeling that people are describing. Sound also seems similar to PSS. I can't speak for other sizes, might be different for 18" or 19" wheels compared to 20's because of the thicker sidewall on the smaller wheels but on my 20's They seem just as stiff in the corners as the PSS. They are the replacement for the PSS which means they took the PSS and developed it more. They are a great tire choice. Just my two cents.

+1

Jimbooo · 07-15-2021, 04:47 AM

Quote:

Originally Posted by CanAutM3

Quote:

Originally Posted by Jimbooo

Who knows. Might be the additional weight in the m4. All I know is my turn in is awful. Almost as bad as with winter tyres on. No steering precision at all.

I've had 4 sets of mpss over the years on m4's oe wheels. And 2 sets of mps4s on oe wheels and one set on aftermarket wheels. Wider at the back.

I've given them a fair try over that time lol. Played around with pressures and driven in all conditions.

Mpss grip a little less but the car steers like a go kart. That is lost for me when you go to mps4s but you gain grip. Both straight line and in the corners but at the cost of feel.

All depends what the drivers priorities are. I've spent so much time in m4's I do have it at the limit quite often when others may not push as hard and wouldn't notice the issues. Who knows. Just my experience.

It may well be that I return to mpss and find myself spinning out all over the place

M2C weighs almost the same as an M4.

PS4S need higher pressures due to their softer sidewalls. Have you tried running 35-38psi in front?

Quote:

Originally Posted by CanAutM3

Quote:

Originally Posted by Jimbooo

Who knows. Might be the additional weight in the m4. All I know is my turn in is awful. Almost as bad as with winter tyres on. No steering precision at all.

I've had 4 sets of mpss over the years on m4's oe wheels. And 2 sets of mps4s on oe wheels and one set on aftermarket wheels. Wider at the back.

I've given them a fair try over that time lol. Played around with pressures and driven in all conditions.

Mpss grip a little less but the car steers like a go kart. That is lost for me when you go to mps4s but you gain grip. Both straight line and in the corners but at the cost of feel.

All depends what the drivers priorities are. I've spent so much time in m4's I do have it at the limit quite often when others may not push as hard and wouldn't notice the issues. Who knows. Just my experience.

It may well be that I return to mpss and find myself spinning out all over the place

M2C weighs almost the same as an M4.

PS4S need higher pressures due to their softer sidewalls. Have you tried running 35-38psi in front?

Yeah I've had them on 35psi front when cold. Running around 39-40 when hot or more if pushing through b-roads. It helps a little but still doesn't feel good. They just feel like a compromise to me in all areas for the sake of a bit more traction.

LYTSOUT · 07-21-2021, 10:44 PM

Quote:

Originally Posted by Humdizzle

i went from pss to ps4. definitely more grip, there is no question about that. second gear with stage 1 hooks up all day now. they do seems quieter to me to. its possible there may be some loss in sidewall stiffness as it rides better over small road imperfections.

haven't taken the car out yet to fully exploit the steering. Then again we are talking about the f80... a car not exactly praised for his steering feel. its never going to turn in like a cayman.

overall its a better road tire imo and helps fix the f80s biggest flaw... lack of traction

What sizes are you running front and rear? I'm going from OEM 18" 513M with MPSS 255/275 up to 19x9.5 and 19x10.5 and I'm thinking of doing 275/305 PS4S

So was your grip improvement with 275? 285? 295? Or maybe even 305??

JagR2611 · 07-21-2021, 11:34 PM

Quote:

Originally Posted by LYTSOUT

Quote:

Originally Posted by Humdizzle

i went from pss to ps4. definitely more grip, there is no question about that. second gear with stage 1 hooks up all day now. they do seems quieter to me to. its possible there may be some loss in sidewall stiffness as it rides better over small road imperfections.

haven't taken the car out yet to fully exploit the steering. Then again we are talking about the f80... a car not exactly praised for his steering feel. its never going to turn in like a cayman.

overall its a better road tire imo and helps fix the f80s biggest flaw... lack of traction

What sizes are you running front and rear? I'm going from OEM 18" 513M with MPSS 255/275 up to 19x9.5 and 19x10.5 and I'm thinking of doing 275/305 PS4S

So was your grip improvement with 275? 285? 295? Or maybe even 305??

Quote:

Originally Posted by LYTSOUT

Quote:

Originally Posted by Humdizzle

i went from pss to ps4. definitely more grip, there is no question about that. second gear with stage 1 hooks up all day now. they do seems quieter to me to. its possible there may be some loss in sidewall stiffness as it rides better over small road imperfections.

haven't taken the car out yet to fully exploit the steering. Then again we are talking about the f80... a car not exactly praised for his steering feel. its never going to turn in like a cayman.

overall its a better road tire imo and helps fix the f80s biggest flaw... lack of traction

What sizes are you running front and rear? I'm going from OEM 18" 513M with MPSS 255/275 up to 19x9.5 and 19x10.5 and I'm thinking of doing 275/305 PS4S

So was your grip improvement with 275? 285? 295? Or maybe even 305??

I couldn't agree more with this assessment. For what it's worth, mine are 295.

Humdizzle · 07-22-2021, 10:14 AM

Quote:

Originally Posted by LYTSOUT

What sizes are you running front and rear? I'm going from OEM 18" 513M with MPSS 255/275 up to 19x9.5 and 19x10.5 and I'm thinking of doing 275/305 PS4S

So was your grip improvement with 275? 285? 295? Or maybe even 305??

running stock sizes on the 19" 437m: 255/275

Hokayy · 07-22-2021, 12:19 PM

I just had 4S installed over 666s and am lowered as well. The grip is definitely there and much better over Mpss. It does feel more "cushiony" so I don't feel the road as much as compared to MPSS but that could be just having new tires?

What are people running for tire pressure on cold? All of my pressure is a bit off since install so will just bring it to America tire to get them all the same later this week. Left front is at 37, rest are at around 32-33.

CookMaster · 08-01-2021, 05:30 PM

I think the ps4 are awesome tires. I ran pss on my previous 335 and they were OE on my f82. Steering was better on the pss, but tire longevity was not. I was getting best, 18k on a set of tires. The ps4 is quieter, better wet capable and more durable. I have consistently got 20k per set with tread still remaining. It’s my go to tire today.

NYG · 08-02-2021, 02:14 PM

My perspective from track use with both:

PS4S is overall a better tire. Great comfort, low noise, good grip in most weather conditions.

PSS is a faster tire. More precise/slightly better grip. PS4S doesn't handle heat as well - got some serious chunking with them.

You'll run faster lap times with the PSS but the PS4S is the better street tire.

IVM3 · 08-02-2021, 10:39 PM

Quote:

Originally Posted by NYG

My perspective from track use with both:

PS4S is overall a better tire. Great comfort, low noise, good grip in most weather conditions.

PSS is a faster tire. More precise/slightly better grip. PS4S doesn't handle heat as well - got some serious chunking with them.

You'll run faster lap times with the PSS but the PS4S is the better street tire.

Was the PS4S chunking near the outer edges? What camber were you running? I'm hoping to use the PS4S as a light track tire occasionally but don't want to destroy them. Would doing a cool down lap after every 3 hot laps help with the chunking?

LYTSOUT · 08-03-2021, 10:09 AM

Quote:

Originally Posted by IVM3

Quote:

Originally Posted by NYG

My perspective from track use with both:

PS4S is overall a better tire. Great comfort, low noise, good grip in most weather conditions.

PSS is a faster tire. More precise/slightly better grip. PS4S doesn't handle heat as well - got some serious chunking with them.

You'll run faster lap times with the PSS but the PS4S is the better street tire.

Was the PS4S chunking near the outer edges? What camber were you running? I'm hoping to use the PS4S as a light track tire occasionally but don't want to destroy them. Would doing a cool down lap after every 3 hot laps help with the chunking?

Unless you're on the track by yourself, I'd highly recommend not doing cool down laps mid-session. Everyone else on the track is assuming that everyone (including you) is running at track speed (80-90%). If you randomly slow down to 50% mid-session, you may present a significant challenge (date I say hazard?) to yourself and those behind you.

If one of my HPDE students suggested this with me in the, I'd just tell him it's safer to pull into the pits.

Just my $0.02

IVM3 · 08-03-2021, 10:18 AM

Quote:

Originally Posted by LYTSOUT

Unless you're on the track by yourself, I'd highly recommend not doing cool down laps mid-session. Everyone else on the track is assuming that everyone (including you) is running at track speed (80-90%). If you randomly slow down to 50% mid-session, you may present a significant challenge (date I say hazard?) to yourself and those behind you.

If one of my HPDE students suggested this with me in the, I'd just tell him it's safer to pull into the pits.

Just my $0.02

Agreed on that if others are on the track. I'm fortunate to have the track to myself 99% of the time.

NYG · 08-03-2021, 02:46 PM

Quote:

Originally Posted by IVM3

Was the PS4S chunking near the outer edges? What camber were you running? I'm hoping to use the PS4S as a light track tire occasionally but don't want to destroy them. Would doing a cool down lap after every 3 hot laps help with the chunking?

Inner/Middle. I ran -2.8 on the M4 and had really decent temperature gradients and wear for the tracks I go to with NT01s, Cup2s, and Super Sports

07-08-2021, 11:53 PM	#24
Tecnniqe Sad ///M noises 4197 Rep 1,798 Posts Drives: ///M4 COMPETITION Join Date: May 2020 Location: In a Piece of History iTrader: (0)	I don't know, I went from the PSS to 4S on my 666s but also jumped up a size front and back and it feels great compared to the PSS. It's all subjective I guess.
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07-09-2021, 09:50 AM	#27
CanAutM3 General 21115 Rep 20,741 Posts Drives: 2021 911 turbo Join Date: Jan 2012 Location: Montreal iTrader: (1) Garage List 2022 Audi RS6 [10.00] 2021 Porsche 911 turbo [10.00]	Worthwhile re-posting here, it addresses directly the topic at hand: __________________ Porsche 911 turbo 2021 992 GT Silver Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black
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07-09-2021, 01:29 PM	#28
CJStevens Private First Class 59 Rep 102 Posts Drives: F80 Join Date: Sep 2020 Location: 02852 iTrader: (1)	I went from PSS to PS4 on my F80 with 666's and they feel great. I don't feel any of the mushy feeling that people are describing. Sound also seems similar to PSS. I can't speak for other sizes, might be different for 18" or 19" wheels compared to 20's because of the thicker sidewall on the smaller wheels but on my 20's They seem just as stiff in the corners as the PSS. They are the replacement for the PSS which means they took the PSS and developed it more. They are a great tire choice. Just my two cents.
	Appreciate 0 Quote

07-13-2021, 12:46 PM	#31
Humdizzle Brigadier General 6036 Rep 3,614 Posts Drives: GT3 + M2c Join Date: Oct 2016 Location: Missouri iTrader: (0)	i went from pss to ps4. definitely more grip, there is no question about that. second gear with stage 1 hooks up all day now. they do seems quieter to me to. its possible there may be some loss in sidewall stiffness as it rides better over small road imperfections. haven't taken the car out yet to fully exploit the steering. Then again we are talking about the f80... a car not exactly praised for his steering feel. its never going to turn in like a cayman. overall its a better road tire imo and helps fix the f80s biggest flaw... lack of traction __________________ 2018 Porsche GT3 6MT 2021 M2C DCT Previous: Ferrari 458 \| R35 GTR \| F80 M3 \| E46 M3 \| E36 M3 \| Scion FRS
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07-22-2021, 12:19 PM	#38
Hokayy Private 57 Rep 74 Posts Drives: M3 Join Date: Oct 2014 Location: United States iTrader: (1)	I just had 4S installed over 666s and am lowered as well. The grip is definitely there and much better over Mpss. It does feel more "cushiony" so I don't feel the road as much as compared to MPSS but that could be just having new tires? What are people running for tire pressure on cold? All of my pressure is a bit off since install so will just bring it to America tire to get them all the same later this week. Left front is at 37, rest are at around 32-33.
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08-01-2021, 05:30 PM	#39
CookMaster Second Lieutenant 42 Rep 213 Posts Drives: 2015 M4 TB Join Date: Nov 2010 Location: Tucson, AZ iTrader: (0)	I think the ps4 are awesome tires. I ran pss on my previous 335 and they were OE on my f82. Steering was better on the pss, but tire longevity was not. I was getting best, 18k on a set of tires. The ps4 is quieter, better wet capable and more durable. I have consistently got 20k per set with tread still remaining. It’s my go to tire today. __________________ 2015 M4 Tanzanite Blue / Exec pkg / Driver Assist Pkg / LED Light Pkg /Blk 19" Wheels
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08-02-2021, 02:14 PM	#40
NYG Brigadier General 10580 Rep 3,643 Posts Drives: Corvette Z06 Join Date: Feb 2017 Location: Brooklyn, NY iTrader: (0)	My perspective from track use with both: PS4S is overall a better tire. Great comfort, low noise, good grip in most weather conditions. PSS is a faster tire. More precise/slightly better grip. PS4S doesn't handle heat as well - got some serious chunking with them. You'll run faster lap times with the PSS but the PS4S is the better street tire.
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