When I purchased my S550 it came with new Goodyear F1 Asymmetric 2 run flats all round in 20". One of the rears blew out on the highway and I was able to limp home late at night on the back roads. The tire was shredded by the end of the 25 mile trip home. The other rear also had to be replaced just before, as it became intimate with a nail strip. I've never had a car with this amount of flat tires. The rears wore down really quickly only 10k miles on them. However, I've managed to squeeze 20k miles out of the fronts. The Goodyear tires are really good in wet and dry conditions. However, I need to replace the front tires and I'm currently looking at options, the rears still have just over half tread depth left.
I don't really want to replace all 4 tires. I would like to start transitioning over the Michelin PS4 or PS4s. However, I would have to go with the ZP as the rears are Goodyear F1 run flats. The Goodyears are an older tire now and reviews I've seen suggest the Michelins are a better tire, the Goodyear Asymmetric 6 would be comparable. However, it's not available for the car. I drive mostly in sport mode and some spirited driving and high speed runs around 140Mph, I did manage a 3.9s 0-60 in it, so the Asymmetric 2 grips. However, their ware and reliability are concerning. Another issue with the Asymmetric 2s is the MB dealers supply 2 year old tires off their shelf.

Would running PS4 ZPs on the front with the existing Asymmetric 2s be fine or would I need to go with 4 new PS4s tires?

 

Michelins on the front will be fine. The car defaults to understeer and I bet you aren’t running around with ESP turned off so it will help if you get her out of shape.

Tire wear? Color me shocked! Those of us who let the horses run get to live with a sizable tire budget. A tire that may last won’t be fun.

Many have done away with the run flats. More pressure with fresh tires.

My next set of front tires will be Continental DWS+. I always enjoyed them on the previous car and they are now available in my sizes.

 

Same axle should have same tire ,it should have no problem . MOE tires could be a good alternatives as well.

 

MOE.... Mercedes Original Extended. AKA OEM tires; run flat. Many tire discussions here on the board.

 

The Goodyear F1 Asymmetric 2 RF are the MOE tires for the vehicle. The GY F1 Asymmetric 2 were released back in 2011, so they're a 15 year old design. Typically, much newer tire designs from the top tire manufactures are superior. It's hard to know how much MB customized the Asymmetric 2 MOE for the car.

 

OP you do not have to use run flat tires. RF tires increase unsprung weight significantly and tend to thud over every bump.

Many threads on the board about alternatives.

 

IMHO, the type of tires you buy are also dependent on where you live, the type of roads you travel on, and how close you are to a tire shop. Here's my recent tire experience out here in the Boondocks.

We bought our 2016 S550 4matic back in 2019 because my wife needs a comfortable ride due to her painful medical condition. We weren't happy that it came with run-flats, as we lived in Fredericksburg, VA where there are several tire shops. We thought about getting regular tires but now we are sold on the run-flats due to where we moved to after leaving our federal government jobs when the gov't mandated the experimental shots.

We are now near Spencer, WV where there is only one tire shop with computer balancing and half a mile of the road to our house in the Boondocks is gravel. Just a couple of weeks ago, as I was driving home, I heard a thud in the rear of the car but thought nothing of it, as the car's behavior did not change at all. Less than a minute later, the dash showed zero tire pressure in the right rear tire. Having had flat tires in other Mercedes cars I've owned over the past 40 years, I was amazed at how I had no trouble getting home about 7 miles away at 45 MPH on a winding road. The tire sidewalls are very strong and kept their shape. The tire didn't even look flat at all. The hole was in the inside tread, about two inches long, and the belts were starting to show on the inside part of the tire, too. That's my fault for only checking the tread on the visible outside portion of the tires. I forgot that the rear tires wear more quickly on the inside because of their standard negative camber. I was very upset with myself.

We immediately bought two regular tires for the rear to see how they ride. The difference in ride compared to the run-flats was almost imperceptible. I was very surprised, having read the opposite. We bought two of the"1 Continental ExtremeContact DWS06 Plus 275/40R19 101Y Performance 50K Warranty 15573420000 / 275/40/19 / 2754019" tires for $510.52 at Walmart for the rear. (Note that the front and rear tires are different sizes for this model S550).

After a lot of discussion with my bride, we decided to go back to run-flats because (1) the ride on the Continental tires was almost the same as the run-flats, and (2) we want to be able to drive home without having to call a tow truck (that may not know how to tow an S550 properly), and (3) we will rarely be more than 30 miles from a qualified tire shop, to which we can drive on the run-flats. So, a few days later, we bought two "Michelin Primacy MXM4 ZP 245/45R19 102V XL bmw a/s All Season Tires"at Walmart for $631.76 USD for the rear (Walmart had the best price and the store is only 20 miles away from us). These tires are the same model number as the worn tires we took off the S550. Although they only lasted 2 ½ years, my neighbors tell me that is not bad for out here.

While the tire shop was changing the rear tires (for the second time in a week!), the shop foreman showed me the wear on the front tires had small quarter-inch cut marks near the outside sidewall (of which I couldn't figure out how they occurred), so I ordered two front tires from Tire Rack "275/40R-19 Michelin Primacy MXM4 ZP Mercedes, MOExtended Run (Qty:2) Order Total: $827.71". Walmart didn't have that size. I have bought tires from Tire Rack a few times before, but they are not always the cheapest online store.

After the front tires were replaced, we found the inside of the left front wheel has a one-inch crack in it and the right front wheel is out-of-round. I will be taking them to "Bent Wheel Solutions" in Charleston for repair ($259 each). It's difficult to find new or used AMG 19" wheels with the same OEM design for the two different front and rear tire sizes. I couldn't find two sets of differently designed wheels that fit the S550 at a reasonable price. I probably didn't look hard enough.

Sorry for the long post. I thought it would be useful to add context to why we bought the tires we did.

73,
Bart, N3GQ

 

I just ordered 4 Michelin PS4S, non RF.
The GY Eagle F1 Asymm 2 RF fronts are cooked, but the rears still have 6-7/32" on them. I'll just have to sell the rears on marketplace. I'll just carry a tire repair kit and the Griot's repair system.
https://www.griotsgarage.com/12v-tir...repair-system/

 

Great decision and I hope you will never have to use that kit at all

 

The deed is done. I had the new PS4S tires installed yesterday. It fixed the strong vibration coming through the steering wheel and the loud whirring road noise when driving. The steering and grip are great from the PS4S. However, I've noticed they are louder when going over bumps on the highway, there is definitely more body roll and a less firm feeling when driving, I feel a back and forth swaying motion happening in the suspension when driving on highways too. It may just be I'm used to the stiffness of the RF tires. I'm wondering if the shocks can be set firmer to compensate, seems like the sports suspension setting now is softer than the comfort setting was. Tire PSI was set to 36 front and 37 rear.

 

You sir - need an S63 :-)

 

I know, I wanted one, I just couldn't find one when I needed to purchase a car. BenzNinja is touting he can make the s63 softer. Maybe I should check to see if he can make the s550 firmer like the s63.

 

I was his original test case for that. He can indeed change the shock programming back and forth from AMG to non-AMG. However he cannot change the physical properties of the shock or the springs so the results are not as amazing as I had hoped now that I've had it in place for a while. It's more useful if you were to actually swap in S63 shocks, then he could load the matching software program for them.

 

Drive it 250 miles. It will get better as the oils used in the manufacturing process wear away.

 

I would settle for the original stiffness of the car when it was on RFs. Do you at least achieve this on your car with the new BN programming?

 

Yeah, he said he could install the S63 programming on mine. How do you find the S63 programming? Is it better than the factory programming?