Michelin PS4S

MAF260

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7,662
Judging by the work my mate does the tyre companies are very keen to help the manufacturers develop the tyres. I’m guessing if you’re the OEM supplier for say the new 3 series that’s an awful lot of business coming your way.

That’s always been my understanding - the money is in the licensing/supply of new tyres to the manufacturers. I’m still not seeing where the manufacturers get a return on investing millions into the same process, but I guess it’s all part of R&D of any new model they produce.
 

Oneball

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11,130
That’s always been my understanding - the money is in the licensing/supply of new tyres to the manufacturers. I’m still not seeing where the manufacturers get a return on investing millions into the same process, but I guess it’s all part of R&D of any new model they produce.

It’s all part of the ride and handling development, tyres can make a huge change to a car, even going as far as using a “different” tyre front to rear to change the handling balance.
 

Oneball

Member
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11,130
Car companies spend a fortune on this stuff. Is why I’m amazed with all these supercar start ups. VW will probably spend a million euros developing the lighting alone on a new car and then some supercar team comes along and says their development costs were 10 million and you wonder where they cut the corners.
 

spkennyuk

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5,966
PS4S vs PS4S* (BMW)

The guy that does that video also does various tyre testing videos.

In one he does a test of the usual manufacturers and the usual suspects score highley.

Bridgestone potenza (IIRC) came in for special mention for driver feel but he also explained that they came from factory with around 1 mm less tread than all the other tyres on test. Something like 7.6mm on the bridgestone new against 8.6mm for all the other tyres.

Less flex in the tread blocks as a result which the other brands may also achieve as they wear down to the same level.

How that affects the overall lifespan / wear rate would be difficult to gauge without a proper wear test across the tyres in the test group.

You are starting off with a tyre that around 12% closer to the MOT fail limit from new. If its a harder compound that may well balance out over the life of the tyre.
 

TimR

Member
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2,731
The guy that does that video also does various tyre testing videos.
He also runs a few "long term"test reviews....

You are starting off with a tyre that around 12% closer to the MOT fail limit from new. If its a harder compound that may well balance out over the life of the tyre.
As with everything, its a balance of trade offs...I have to say, I would be very surprised if a harder compound offered the kind of grip and feel across the range of parameters, to rival softer compound tyres, which seems to be the sense of what you are suggesting...

Im glad someone mentioned these tyres..Peter never drives his car anyway....so <1mm tread is neither here nor there; as may be the case for many who only pootle about doing !500 miles a year..!?
 

safrane

Member
Messages
16,896
He also runs a few "long term"test reviews....


As with everything, its a balance of trade offs...I have to say, I would be very surprised if a harder compound offered the kind of grip and feel across the range of parameters, to rival softer compound tyres, which seems to be the sense of what you are suggesting...

Im glad someone mentioned these tyres..Peter never drives his car anyway....so <1mm tread is neither here nor there; as may be the case for many who only pootle about doing !500 miles a year..!?
Oye, I did 599 last year - well Matt did some of those, and it also did 400 on the back of the transporter having work done... come to think of it how on earth did I rake up such high miles last year?
 

FIFTY

Member
Messages
3,100
He also runs a few "long term"test reviews....


As with everything, its a balance of trade offs...I have to say, I would be very surprised if a harder compound offered the kind of grip and feel across the range of parameters, to rival softer compound tyres, which seems to be the sense of what you are suggesting...

Im glad someone mentioned these tyres..Peter never drives his car anyway....so <1mm tread is neither here nor there; as may be the case for many who only pootle about doing !500 miles a year..!?

Yup 6.5mm tread but it took me 5 years to use up the potenza S001s on the rear which was on the edge of them "going off"... I agree for low milage per annum cars it's negligible

They are cheaper than the equivalent Michelin and Goodyear which is representative of less tread.
 

Gazcw

Member
Messages
7,794
Hmmm bm oe version then is it? Be interesting to see what the ferrari version was like.
 

Gazcw

Member
Messages
7,794
The guy that does that video also does various tyre testing videos.

In one he does a test of the usual manufacturers and the usual suspects score highley.

Bridgestone potenza (IIRC) came in for special mention for driver feel but he also explained that they came from factory with around 1 mm less tread than all the other tyres on test. Something like 7.6mm on the bridgestone new against 8.6mm for all the other tyres.

Less flex in the tread blocks as a result which the other brands may also achieve as they wear down to the same level.

How that affects the overall lifespan / wear rate would be difficult to gauge without a proper wear test across the tyres in the test group.

You are starting off with a tyre that around 12% closer to the MOT fail limit from new. If its a harder compound that may well balance out over the life of the tyre.
Found this on K1 tyres
Here is the deal with the Michelin PSS in "Ferrari K1" spec compared to the normal spec tire.

1) The Ferrari "K1" spec tires ARE different compared to the normal non Ferrari tires

2) The "K1" spec starts out with less tread wear. For the 245/35/20 size it starts out with 9/32 tread where as the normal tire is 10/32. Barely any difference but.....the 285/30/20 K1 Ferrari tire starts out at just 7/32 tread where as the normal tire is 10/32. You are basically losing 30% of tread right off the bat to save weight (more on that later).

3) The tread design pattern is the same but the grooves in between the tread columns on the K1 tire is wider. You have to see the tire side by side to see the difference.

4) The K1 Ferrari tire tends to be lighter weight than the normal tire. For the 285/30/20 size the K1 tire is approx 2.6lbs lighter. This doesn't mean its only from shaving down the tread of the tire because the overall diameter of both tires is exactly the same according to Michelin's specs.

5) Now here's the kicker. Since i originally ordered the K1 spec tires for both the front and rear just to find out now that Tirerack also sells the Normal version non K1 tire in the 285/30/20 size, I called to exchange the tires since i haven't mounted them yet. Now that i have both sets of the tires in front of me the K1 tire has a different profile sidewall and is also much stiffer than the normal non K1 tire. The K1 tire's sidewall is more rounded and has more of a stretched look while the normal version is a more traditional blockier sidewall (less stretch look). You can tell just by looking at the tire without them being installed on a wheel. The part that worries me is that the K1 tire will probably have stiffer ride comfort (better handling) compared to the non K1 version. I believe this is due to the K1 tire having a higher speed rating than the normal tire. Not sure.
 

MA53RAT

Junior Member
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29
Going through the same pain myself, trying to get pilot sport 4 s all around and been trying to understand if the K1 Ferrari fitment (which is available) would be ok on a Strad…
 

Gazcw

Member
Messages
7,794
Going through the same pain myself, trying to get pilot sport 4 s all around and been trying to understand if the K1 Ferrari fitment (which is available) would be ok on a Strad…
I have decided to wait and see if the 5S will be out soon. I still have tread currently. Will, need some before June at a guess.
 

RoaryRati

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1,642
Had a brief chat with WIM yesterday - they can't get hold of p4's but P5's are now out - anyone tried them yet?
 

rs48635

Member
Messages
3,181
Asda has Michelin PS4S in stock £251 delivered ( chose 10mm wider 295/30 R20 for tiny bit of rim protection)

and the official for £233 Pilot Sport 4 S 285/30R20 99Y XL
 

outrun

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5,017
Costco are £241 fitted and you get £100 off 4 or £50 off 2.

Just don't go in and blow the savings on a lifetime supply of cashew nuts and a kayak.
 

rs48635

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Messages
3,181
Costco are £241 fitted and you get £100 off 4 or £50 off 2.

Just don't go in and blow the savings on a lifetime supply of cashew nuts and a kayak.

Not seeing PS4S near me - do I need to be member ? Are the prices local to each centre?
They do offer Cup 2 at £264 fitted before the £50 discount on pair so ~ £220 each.
Is it worth the 120 mile round trip + joining costco ?