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      08-30-2020, 06:32 PM   #199
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I believe these are the new Michelin Cup2 Connect 240- meaning they are up from 180.
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      10-09-2020, 08:15 PM   #200
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Get the Yokohama A052 if you can...

255/275 35 19 is now available in Japan

https://www.y-yokohama.com/product/t...van_a052_size/

Test results

https://www.tirerack.com/tires/tests...y.jsp?ttid=262
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      10-13-2020, 02:30 AM   #201
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Quote:
Originally Posted by Karmic Man View Post
Get the Yokohama A052 if you can...

255/275 35 19 is now available in Japan

https://www.y-yokohama.com/product/t...van_a052_size/

Test results

https://www.tirerack.com/tires/tests...y.jsp?ttid=262
Hopefully they become available in that size in the US soon. Currently they only have 1 19" size.
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      10-16-2020, 02:27 PM   #202
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Do wider tyres give you more grip ? (2018)



My M2C setup: Michelin PS4S | 255/35 R19 (F) | 265/35 R19 (R).

A couple of videos about the PS4S tires:
  • PSS vs PS4S (2017): here
  • PS4S vs Cup2 (2018): here
  • PS4 vs PS4S vs Cup2 (2018): here
  • PS4S vs Continental SportContact 6 vs Eagle F1 SuperSport (2019): here
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      10-17-2020, 08:48 AM   #203
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Quote:
Originally Posted by Artemis View Post
Do wider tyres give you more grip ? (2018)

My M2C setup: Michelin PS4S | 255/35 R19 (F) | 265/35 R19 (R).

A couple of videos about the PS4S tires:
  • PSS vs PS4S (2017): here
  • PS4S vs Cup2 (2018): here
  • PS4 vs PS4S vs Cup2 (2018): here
  • PS4S vs Continental SportContact 6 vs Eagle F1 SuperSport (2019): here
Great info, thanks. 255 front and 265 rear is my target for the next tire change (might to 265 and 275)
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      10-17-2020, 09:57 AM   #204
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Quote:
Originally Posted by mr_lab_rat View Post
Great info, thanks. 255 front and 265 rear is my target for the next tire change (might to 265 and 275)
See also this overview by forum fellow mToronto:



My former M2 and current M2C setup: Michelin PS4S | 255/35 R19 (F) | 275/35 R19 (R) (i.e. 1 size up):
Quote:
Originally Posted by Artemis View Post
It's all kinda subjective. I upscaled PSS to PS4S in 2017. Especially wet-handling got improved (improved safety too). When I upscaled PS4S 1 size in 2019 (from 245/35 R19 + 265/35 R19 to 255/35 R19 + 275/35 R19), I also upscaled from 437M to 763M wheels. That complicates (subjective) comparisons.
But here's what I can say: especially once up to temp, DSC nannies are quieter than ever (especially when accelerating out of hairpins) and the set gets you a fraction more grip. Turn-in improved, but for sure the credit for that mainly belongs to 763M (reduced unsprung weight / rotational mass).
As regards technical control of vehicles: upscaling from 245/265 to 255/275 stays within the 'tolerances' band, and, hence, gets a pass over here.
In my book (city + highway + mountain driving), 255/275 PS4S + 763M wins.
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      10-17-2020, 10:47 AM   #205
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Quote:
Originally Posted by Artemis View Post
See also this overview by forum fellow mToronto:
You keep posting that chart and it's honestly pretty useless, it doesn't even give the TW or weight.
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      10-17-2020, 11:42 AM   #206
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Quote:
Originally Posted by VisualEcho View Post
You keep posting that chart and it's honestly pretty useless, it doesn't even give the TW or weight.
Well, whatever floats your boat.
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      10-17-2020, 03:35 PM   #207
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Quote:
Originally Posted by Artemis View Post
Well, whatever floats your boat.
No disrespect intended, just wondering why you seem to post it often when F/R ratio isn't what most people are concerned about, nor does it answer the question of this thread.

Most guys are concerned with either fitment and/or added grip, neither of which are shown in the graph.

There is but one answer to this thread, and it's a resounding YES.

• The 255/275 tires are always taller, putting the weight further away from the hub
• They are more often heavier (just the front is in the popular PS4S)
• They (depend on which tire you choose) create a different shaped contact patch front-to-rear than stock, which changes the driving dynamic.

Even if you choose the exact same model of tire (PSS) you're not really doing yourself any favors. Literally the only reason to move to that size would be for increased pothole protection, everything else is the same or a con.
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      10-17-2020, 07:40 PM   #208
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VisualEcho a more proper comparison would be to use the XL-rated 255/35ZR19 PS4S vs the SL-rated one, which happens to have a much larger contact patch than the SL one
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      10-18-2020, 06:31 AM   #209
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Quote:
Originally Posted by Matt Devo View Post
VisualEcho a more proper comparison would be to use the XL-rated 255/35ZR19 PS4S vs the SL-rated one, which happens to have a much larger contact patch than the SL one
You mean tread width. You can't increase contact patch with tire size, as it's a result of vehicle weight and tire pressure. On the same car, a 295 has the same contact patch as a 245, it's just a different shape.

And yes, there are several versions made, so to each their own.
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      10-18-2020, 08:24 AM   #210
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Quote:
Originally Posted by Matt Devo View Post
VisualEcho a more proper comparison would be to use the XL-rated 255/35ZR19 PS4S vs the SL-rated one, which happens to have a much larger contact patch than the SL one
Quote:
Originally Posted by VisualEcho View Post
You mean tread width. You can't increase contact patch with tire size, as it's a result of vehicle weight and tire pressure. On the same car, a 295 has the same contact patch as a 245, it's just a different shape.

And yes, there are several versions made, so to each their own.
Wait. Hold on. Could you explain that for the tire illiterate? There are different versions (XL v. SL) of the same tire?

So, If I go to Tire Rack/Discount Tire/Big-O/etc. and say "I want PS4S in 255/275, what am I getting? And since clearance on the 255 is very tight on an M2C, which one is guaranteed to clear?

Explain please? (NOT busting balls-- I really didn't know this. I knew there were a few "manufacturer" specific lines of tires, but have never heard of XL v. SL)

TIA.
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      10-18-2020, 09:45 AM   #211
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Quote:
Originally Posted by flybigjet View Post
Wait. Hold on. Could you explain that for the tire illiterate? There are different versions (XL v. SL) of the same tire?

So, If I go to Tire Rack/Discount Tire/Big-O/etc. and say "I want PS4S in 255/275, what am I getting? And since clearance on the 255 is very tight on an M2C, which one is guaranteed to clear?

Explain please? (NOT busting balls-- I really didn't know this. I knew there were a few "manufacturer" specific lines of tires, but have never heard of XL v. SL)

TIA.
I think there are just 3 different 255/35/19's (at least at tirerack). The part in yellow is the tread width, which is the real shoulder of the tire, and what you'd use for fitment.

If you look at the first tire it says "Star BMW", but interestingly enough, if you buy this size tire without putting in that you have a BMW, that's not the tire that they will sell you. So you just have to be careful and select the correct tire.

Also notice the WEIGHT difference between the 3 tires...of the same size...of the same brand...of the same spec...
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      10-18-2020, 09:48 AM   #212
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flybigjet,

Here's a link to details of the load rating description on Tire Rack: https://www.tirerack.com/tires/tiret...id=194#maxload

Also, it's not been my experience that a 255/35-19 is a problem on the M2C. I've got a set of RE-71Rs (which tend to run a bit wide) in 255/35-19 and 275/25-19, on stock width and offset wheels, for autox and track use that fit fine, no issues, no rub.
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      10-18-2020, 09:49 AM   #213
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Oh, and sorry, XL and SL are just the load ratings. The SL has a max psi of 36 I believe, and not one you'd normally choose for a heavy BMW. XL is what you're after, but again, if you just put in the size tires you're after, not what they're going on, you could get ANY of the 3.
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      10-20-2020, 11:43 AM   #214
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Quote:
Originally Posted by VisualEcho View Post
Quote:
Originally Posted by Artemis View Post
Quote:
Originally Posted by VisualEcho View Post
You keep posting that chart and it's honestly pretty useless, it doesn't even give the TW or weight.
Well, whatever floats your boat.
No disrespect intended
To each his own.

By the way, I'm not interested in drifts, donuts or burnouts. I'm only interested in grip and safety (whether it's in the city, mountains or on the highway).

This is what floats my boat (and IMHO fit for purpose for my use) (no rubbing - no iDrive error messages):
Name:  PS4S_255_275.png
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Fresh rubber - Front (PS4S - 255/35 R19):
Name:  M_PS4S_Front_255_35_19.jpg
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Fresh rubber - Rear (PS4S - 275/35 R19):
Name:  M_PS4S_Rear_275_35_19.jpg
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Size:  425.2 KB

Recently at night somewhere on a calm German Autobahn:
Name:  M2C_Autobahn_Oct20.jpg
Views: 10238
Size:  403.8 KB
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      10-20-2020, 12:25 PM   #215
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Quote:
Originally Posted by Artemis View Post
To each his own.

By the way, I'm not interested in drifts, donuts or burnouts. I'm only interested in grip and safety (whether it's in the city, mountains or on the highway).

This is what floats my boat (and IMHO fit for purpose for my use) (no rubbing - no iDrive error messages):
Your 255/275 combo is indeed giving you a slight amount more sideways grip, as well as giving you slightly more understeer, slower turn-in, less grip in the rain compared to stock sizes, and slightly less power because the weight is further away from the hub.

Everything is a trade off, and to that end the 245/265 combo is the best trade-off for most, which is why BMW spec'd them.
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      10-20-2020, 01:06 PM   #216
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FWIW: F82 M4 CS tires:

Front: 763M with PSS 255/35 ZR19 XL 96Y


Rear: 763M wheels with PSS 285/30 ZR20 XL 99Y
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      10-20-2020, 01:08 PM   #217
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Quote:
Originally Posted by Artemis View Post
FWIW: F82 M4 CS tires:

Front: 763M with PSS 255/35/19
Because no 265/30 exists in that tire.
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      10-21-2020, 06:21 AM   #218
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Quote:
Originally Posted by VisualEcho View Post
Your 255/275 combo is indeed giving you a slight amount more sideways grip, as well as giving you slightly more understeer, slower turn-in, less grip in the rain compared to stock sizes, and slightly less power because the weight is further away from the hub.

Everything is a trade off, and to that end the 245/265 combo is the best trade-off for most, which is why BMW spec'd them.
255/275 PS4S compound grips better in straight line acceleration than 245/265 PSS... it's quieter as well and also the PS4S compound grips better in the rain too, despite being wider.
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      10-21-2020, 06:29 AM   #219
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Quote:
Originally Posted by hlm2c View Post
Quote:
Originally Posted by VisualEcho View Post
Your 255/275 combo is indeed giving you a slight amount more sideways grip, as well as giving you slightly more understeer, slower turn-in, less grip in the rain compared to stock sizes, and slightly less power because the weight is further away from the hub.

Everything is a trade off, and to that end the 245/265 combo is the best trade-off for most, which is why BMW spec'd them.
255/275 PS4S compound grips better in straight line acceleration than 245/265 PSS... it's quieter as well and also the PS4S compound grips better in the rain too, despite being wider.
Compare apples to apples. The PS4S is just a better tire...even in the wrong size.
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      10-21-2020, 10:16 AM   #220
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Great thread and was on the fence between the two sizes. Recently picked up a nail and had to replace the rears, went with 265 PS4S. Thanks for all the feedback here!
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