[VisualEcho]

Originally Posted by Downunder99

My rears are done and I think I have made up my mind to switch to PS4S, but the increased width I am still unsure.

The 255/35 & 275/35 PS4S isn't much bigger than the stock 245/35 & 265/35 PSS, so you'll be fine.

[DanG]

Originally Posted by Downunder99

Trying to make up my mind whether to switch my current 2018 M2 OE set of 245/35/R19 and 265/35/R19 PSS on 437M's to the M3/4 setup with 255/35/R19 and 275/35/R19 and at the same time switch to PS4S.
My rears are done and I think I have made up my mind to switch to PS4S, but the increased width I am still unsure. I read about too much grip from the PS4S / wider tire combination, the sligthly increased diameter of 0.3 inches (from 26.3 to 26.6 inch), etc. The factory winter wheel recommendation which I am running has the rears at 25.0 inch diameter, so one would think the 0.3 inch more on the 275 vs the 265 summers shouldn't really matter? Should I just upgrade from PSS to PS4S with the same OE standard width, but run some 10 mm spacers all around for better looks? Running everything stock in regards to suspension. Objective is to increase rear grip (but not too much), which I read the PS4S's will deliver on, but also have it look a little better than the factory setup in regards to the fender/wheel offset.
Trying to get some fresh opinions ...

I just upgraded my stock Contis to Michelin PS4S 255/35/19 and 275/35/19. No rubbing on stock suspension and nice improvement in steering feel. I recommend the change.

[Rapture1]

Originally Posted by flybigjet

Nope-- but I haven't tried all that hard.

Wheels are delayed until April, so I have time to do research-- IF I go with the 285/30 instead of the 295/30. I'm not sure which is the "best" tire to pair with the 265/30 front.

Wife wanted to remodel house (translation: She extorted me in exchange for being able to buy wheels, tires, suspension, etc.), so that's been moved up to the front of the line lately-- Hardwood guy comes tomorrow, so I'm spending the day pulling carpet and doing prepwork for the entire upstairs (three bedrooms).

R.

I had sent an e-mail inquiry to Michelin last week and receive a response basically and was told they don't have production plans at this time. I just called Michelin to check again, and was told they plan to release this tire size to the U.S. on 4/1/2021! Woo Hoo!

It better not be an April Fools joke.

I'm ordering the Richland Forged wheels in the new M2 specific offset.

[flybigjet]

Originally Posted by Rapture1

I had sent an e-mail inquiry to Michelin last week and receive a response basically and was told they don't have production plans at this time. I just called Michelin to check again, and was told they plan to release this tire size to the U.S. on 4/1/2021! Woo Hoo!

It better not be an April Fools joke.

I'm ordering the Richland Forged wheels in the new M2 specific offset.

Yaaay!

My Apex wheels are delayed until May so this would be outstanding!!!

[AlpsRider]

Originally Posted by flybigjet

Yaaay!

My Apex wheels are delayed until May so this would be outstanding!!!

Which wheels did you pick? I've been thinking about the EC-7R in Gloss gunmetal. I didn't know that the wait was so long.

[flybigjet]

Originally Posted by AlpsRider

Which wheels did you pick? I've been thinking about the EC-7R in Gloss gunmetal. I didn't know that the wait was so long.

Anthracite EC-7's to go on my SOM M2C.

Apex is having supply chain issues just like the rest of the world, so I can't really fault them.

R.

[danbart]

Well, I just went from stock Mich. PSS 245/35-19 & 265/35-19 to Mich. S4 in 265/30-19 & 295/30-19 with zero issues. Car is on stock suspension.

Before:








After:










Looks good and I like the extra bit of curb protection.

[flybigjet]

Originally Posted by Rapture1

I had sent an e-mail inquiry to Michelin last week and receive a response basically and was told they don't have production plans at this time. I just called Michelin to check again, and was told they plan to release this tire size to the U.S. on 4/1/2021! Woo Hoo!

It better not be an April Fools joke.

I'm ordering the Richland Forged wheels in the new M2 specific offset.

I just got off the phone with a very nice Michelin rep. The MP4S 285/30/19 is CONFIRMED, and it's not an April Fool's joke.

Release date is 1 Apr 2020 with purchase availability most likely late April/early May.

Now, to decide between 285 and 295 for the rears.

R.

[bing240sx]

anyone running 265/35/19 fronts on 788M with stock suspension? Basically just swapping rear tire to front on an M2C

i see a couple posts here theorizing it rubs but no one specifically saying they have tried it and rubbed.

Looks like 285/35/19 will fit in the rear based on this thread and others.

[VisualEcho]

Originally Posted by danbart

Well, I just went from stock Mich. PSS 245/35-19 & 265/35-19 to Mich. S4 in 265/30-19 & 295/30-19 with zero issues. Car is on stock suspension. Looks good and I like the extra bit of curb protection.

I still think the 285/30 is a better fit, but your car looks great, fitment is fantastic, and yup, more protection. Well played.

[Rapture1]

Just thought I would post this update here in addition to the specific thread on obtianing the 285/30/19 MP4S.


I feel the pain on this also.

I just called Michelin about this to see if I could obtain some type of ETA. The woman I spoke with said they still do not have stock here yet. She also said that I could order these and would be on the "reserve" list to get them first. I have called Tirerack about these tires in the past but they never suggested they could be ordered.

I just called Tirerack again and asked if they could be ordered, and they said yes, so I ordered them. At least I'm in the queue now, no telling for how long though.

[arciga18]

Originally Posted by danbart

Well, I just went from stock Mich. PSS 245/35-19 & 265/35-19 to Mich. S4 in 265/30-19 & 295/30-19 with zero issues. Car is on stock suspension.

Before:








After:










Looks good and I like the extra bit of curb protection.

Any room/ need for a spacer ?

[M2_MEDUSA]

Originally Posted by Bee Pee

Any pictures ?

Picture?

[trainwreck1446]

Originally Posted by Pyrat 2

Thanks! Helpful.
Wanting 265/35 instead of 275/30 because I'm looking for some extra rubber between the ground and the wheel. My concern has been rubbing with the fender liner in front near the inlet duct. Clearance is very tight even with the stock wheels when they are turned and I want to make sure that the larger diameter doesn't rub there. I'm not concerned about inner rub with the strut or outer rub with the fender (because of my camber).
I too will be going with the Turner extenders. My wheel on order are 35 offset and was looking at either the 7.5 to 10mm extenders giving me a 27.5 or 25 offset. My rear offset will be 35 with a 265 or 275/35-19 tire.

Any update on how this turned out?

[EDWYER]

Originally Posted by Karmic Man

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

I'm hoping to get these next month. Will report back.

[kart driver]

Originally Posted by Rodbearings

I'm hoping to get these next month. Will report back.

Ordering 3 sets of those. Will report later once put on and tested.

[contented]

I like the look of bigger (wider) tires and follow these upsizing threads closely. Don’t believe I’ve seen the following discussed. Does anyone know the effect going up one or two sizes on speedometer accuracy, anti lock braking and DSC function, if any? It seems logical that wider tires increase load on drivetrain components under certain full throttle conditions. One side of me thinks there’s a good reason why BMW chose the stock sizes. The other side thinks the stock tire sizes are probably conservative and can be bumped up w/o problem. Any thoughts?

[VisualEcho]

Originally Posted by contented

Does anyone know the effect going up one or two sizes on speedometer accuracy...

My speedometer is 2mph optimistic at 80, so increasing the OD a bit would actually help. But of course, you could take that too far.

Originally Posted by contented

...anti lock braking and DSC function, if any?

I haven't heard of any issues here, and a lot of guys run quite a bit bigger tires, like the 666M combo from the M3/M4.

I think the trick there is to stay close to factory differences between front and rear, and not just increase the size of the rear tire.

Originally Posted by contented

It seems logical that wider tires increase load on drivetrain components under certain full throttle conditions. One side of me thinks there’s a good reason why BMW chose the stock sizes. The other side thinks the stock tire sizes are probably conservative and can be bumped up w/o problem. Any thoughts?

Unsprung weight is a big deal, for sure, but people make it out to be way bigger than it is. I come from the Lotus community and they are ate up with it, yet not a single person has been able to show a difference on the track, and certainly never will on the street. I'm certain BMW had their reasons for choosing the stock sizes, and I'd bet that it has to do with several factors. The weight, the fit, and availability at least. However, a quick read through this thread, and others like it will show that you can run a myriad of different sizes and get away with it, just don't expect to get better performance. On 9 & 10, stock sizes FTW IMO.

[flybigjet]

I've been losing my mind lately (not so you'd notice) regarding wheels, tires and suspension, and the various combinations thereof. I've been going around, and around, and around without really getting anywhere.

Final answer. I think.

Suspension: TC Kline Single/Double, 300/600 springs. (Although, I am lightly hitting bump stops in the front and rubbing the top of the rear tire with the suspension fairly near to stock. My shop is reaching out to TCK for suggestions, but the general feeling is that 400/700 springs are probably in my future. I'm unsure of how that'll effect the ride compliance, so all the more reason to stay away from -30 series tires.)
Wheels: Apex EC-7 in M2C offsets (19x9.5 ET28 & 19x10.5 ET45).
Tires: Michelin MP4S 255/35/19 & 275/35/19

The bottom line is that the -30 series sidewalls sort of scare me in Denver. The roads here can occasionally swallow the better part of a wheel-- i.e. smooth, flat asphalt isn't exactly a thing here. The 255/275 seems to be a reasonable compromise-- if I lived in AZ or SoCal, I'd do the 265/30/19 & 285/30/19, but I don't really want to ding a wheel the next time the car takes a good whack at highway speeds. Admittedly, it was a tough decision-- but honestly? I'm not really a fan of how thin the -30 series sidewalls look-- that was a bit of a consideration as well.

I'll raise the suspension back to more or less stock height, and the slightly (0.2") taller sidewall will help fill the wheel/fender gap a bit. I don't mind having the car at close to stock height (as long as the wheel/fender gap decreases)-- I've developed a pretty severe fear of driveway entries since I lowered it, so this should alleviate things a bit.

One other consideration is that I can get Cup 2's in the same exact size tire. Assuming I continue to track the car, I can use the stock wheels and get Cup 2's in the same size listed above (something not possible with the 265/285-295). That'll allow me to just swap wheels on Track Days without having to worry about adjusting suspension, camber, etc. whenever I want to go to the track. As I get older, I'm more interested in "easier" than "absolutely perfect".

I *think* everything will sort itself out-- if not, it's going to be an expensive mistake.

Wheels *should* hit Apex in the next ten days or so, and I should hopefully have them in my hot little hands a little after that.

I'll have them mounted up with the new rubber and then I'll transport them separately to my shop (Bimmerhaus, which is AWESOME)-- that way they can play around with ride height and suspension setup without me doing any damage since the car is a bit lower than stock at the moment.

Think Good Thoughts.

R.

R.

[VisualEcho]

Originally Posted by flybigjet

I've been losing my mind lately (not so you'd notice) regarding wheels, tires and suspension, and the various combinations thereof. I've been going around, and around, and around without really getting anywhere.

Welcome to my life, you probably won't enjoy your stay, but the seats are comfy, and I'll get you a cold drink.

[Rapture1]

Originally Posted by Rapture1

Just thought I would post this update here in addition to the specific thread on obtianing the 285/30/19 MP4S.


I feel the pain on this also.

I just called Michelin about this to see if I could obtain some type of ETA. The woman I spoke with said they still do not have stock here yet. She also said that I could order these and would be on the "reserve" list to get them first. I have called Tirerack about these tires in the past but they never suggested they could be ordered.

I just called Tirerack again and asked if they could be ordered, and they said yes, so I ordered them. At least I'm in the queue now, no telling for how long though.

Update:

So, a bit to my surprise, I received a notice today from the Tirerack that my tires had shipped. Interesting because I had called Michelin on Saturday and they said they were still not in production and may not be for another month or more. I called Tirerack and they confirmed the delivery will be made tomorrow. I ordered these even though they do not show as available on Tirerack's site.

I'm a happy guy, now need to get them mounted, and coated. Still trying to figure out which suspension to get if it looks like a 4X4 when I put them on.

[M2_MEDUSA]

Anyone have experience with spacers and 255/35/19 front and 275/35/19 rear. I'm on 763M's and running 12mm front 10mm rear. No rub. Someone earlier in the thread said he was rubbing on this tire setup on 10mm spacers. Anyone confirm?